5 or so references to Giant Rephaites

Deuteronomy 3:10-14

We took all the towns on the plateau, and all Gilead, and all Bashan as far as Salekah and Edrei, towns of Og's kingdom in Bashan. (Og king of Bashan was the last of the Rephaites. His bed was decorated with iron and was more than nine cubits long and four cubits wide. It is still in Rabbah of the Ammonites.) Of the land that we took over at that time, I gave the Reubenites and the Gadites the territory north of Aroer by the Arnon Gorge, including half the hill country of Gilead, together with its towns. The rest of Gilead and also all of Bashan, the kingdom of Og, I gave to the half-tribe of Manasseh. (The whole region of Argob in Bashan used to be known as a land of the Rephaites. Jair, a descendant of Manasseh, took the whole region of Argob as far as the border of the Geshurites and the Maakathites; it was named after him, so that to this day Bashan is called Havvoth Jair.)

Other references to Og can be found in Joshua 12:4 and 13:13 and t the Rephaites in Genesis 14:5 and 15:20 and Deuteronomy 2

2 Samuel 21:15-22

Once again there was a battle between the Philistines and Israel. David went down with his men to fight against the Philistines, and he became exhausted.

And Ishbi-Benob, one of the descendants of Rapha, whose bronze spearhead weighed three hundred shekels and who was armed with a new sword, said he would kill David. But Abishai son of Zeruiah came to David's rescue; he struck the Philistine down and killed him. Then David's men swore to him, saying, "Never again will you go out with us to battle, so that the lamp of Israel will not be extinguished."

In the course of time, there was another battle with the Philistines, at Gob. At that time Sibbekai the Hushathite killed Saph, one of the descendants of Rapha.

In another battle with the Philistines at Gob, Elhanan son of Jair the Bethlehemite killed the brother of Goliath the Gittite, who had a spear with a shaft like a weaver's rod.

In still another battle, which took place at Gath, there was a huge man with six fingers on each hand and six toes on each foot - twenty-four in all. He also was descended from Rapha. When he taunted Israel, Jonathan son of Shimeah, David's brother, killed him.

These four were descendants of Rapha in Gath, and they fell at the hands of David and his men.

1 Chronicles 20:4-8

In the course of time, war broke out with the Philistines, at Gezer. At that time Sibbekai the Hushathite killed Sippai, one of the descendants of the Rephaites, and the Philistines were subjugated.

In another battle with the Philistines, Elhanan son of Jair killed Lahmi the brother of Goliath the Gittite, who had a spear with a shaft like a weaver's rod.

In still another battle, which took place at Gath, there was a huge man with six fingers on each hand and six toes on each foot - twenty-four in all. He also was descended from Rapha. When he taunted Israel, Jonathan son of Shimea, David's brother, killed him.

These were descendants of Rapha in Gath, and they fell at the hands of David and his men.

11 and more Obscure Old Testament Prophets

Ahijah

1 Kings 11:29

About that time Jeroboam was going out of Jerusalem, and Ahijah the prophet of Shiloh met him on the way, wearing a new cloak. The two of them were alone out in the country,

1 Kings 14:2, 18

And Jeroboam said to his wife, “Go, disguise yourself, so you won’t be recognized as the wife of Jeroboam. Then go to Shiloh. Ahijah the prophet is there—the one who told me I would be king over this people.

They buried him, and all Israel mourned for him, as the Lord had said through his servant the prophet Ahijah.

2 Chronicles 9:29

As for the other events of Solomon’s reign, from beginning to end, are they not written in the records of Nathan the prophet, in the prophecy of Ahijah the Shilonite and in the visions of Iddo the seer concerning Jeroboam son of Nebat?

Shemaiah

1 Kings 12:22-24

But this word of God came to Shemaiah the man of God: “Say to Rehoboam son of Solomon king of Judah, to all Judah and Benjamin, and to the rest of the people, 'This is what the Lord says: Do not go up to fight against your brothers, the Israelites. Go home, every one of you, for this is my doing.’” So they obeyed the word of the Lord and went home again, as the Lord had ordered.

2 Chronicles 12:5

Then the prophet Shemaiah came to Rehoboam and to the leaders of Judah who had assembled in Jerusalem for fear of Shishak, and he said to them, “This is what the Lord says, ‘You have abandoned me; therefore, I now abandon you to Shishak.’”

Hanani

2 Chronicles 16:7

At that time Hanani the seer came to Asa king of Judah and said to him: “Because you relied on the king of Aram and not on the Lord your God, the army of the king of Aram has escaped from your hand.

Jehu

1 Kings 16:1-4

Then the word of the Lord came to Jehu son of Hanani concerning Baasha: “I lifted you up from the dust and appointed you ruler over my people Israel, but you followed the ways of Jeroboam and caused my people Israel to sin and to arouse my anger by their sins. So I am about to wipe out Baasha and his house, and I will make your house like that of Jeroboam son of Nebat. Dogs will eat those belonging to Baasha who die in the city, and birds will feed on those who die in the country.”

2 Chronicles 19:1, 2

When Jehoshaphat king of Judah returned safely to his palace in Jerusalem, Jehu the seer, the son of Hanani, went out to meet him and said to the king, “Should you help the wicked and love[a] those who hate the Lord? Because of this, the wrath of the Lord is on you.

Micaiah

1 Kings 22:6-8

So the king of Israel brought together the prophets - about four hundred men - and asked them, “Shall I go to war against Ramoth Gilead, or shall I refrain?” “Go,” they answered, “for the Lord will give it into the king’s hand.” But Jehoshaphat asked, “Is there no longer a prophet of the Lord here whom we can inquire of?” The king of Israel answered Jehoshaphat, “There is still one prophet through whom we can inquire of the Lord, but I hate him because he never prophesies anything good about me, but always bad. He is Micaiah son of Imlah.”

Sons of Asaph, Heman and Jeduthun

1 Chronicles 25:1

David, together with the commanders of the army, set apart some of the sons of Asaph, Heman and Jeduthun for the ministry of prophesying, accompanied by harps, lyres and cymbals. Here is the list of e men who performed this service:

Iddo

2 Chronicles 9:29

As for the other events of Solomon’s reign, from beginning to end, are they not written in the records of Nathan the prophet, in the prophecy of Ahijah the Shilonite and in the visions of Iddo the seer concerning Jeroboam son of Nebat?

2 Chronicles 12:15

As for the events of Rehoboam’s reign, from beginning to end, are they not written in the records of Shemaiah the prophet and of Iddo the seer that deal with genealogies? There was continual warfare between Rehoboam and Jeroboam.

Azariah

2 Chronicles 15:1

The Spirit of God came on Azariah son of Oded:

Eliezer

2 Chronicles 20:37

Eliezer son of Dodavahu of Mareshah prophesied against Jehoshaphat, saying, “Because you have made an alliance with Ahaziah, the Lord will destroy what you have made.” The ships were wrecked and were not able to set sail to trade.

Oded

2 Chronicles 28:9

But a prophet of the Lord named Oded was there, and he went out to meet the army when it returned to Samaria. He said to them, “Because the Lord, the God of your ancestors, was angry with Judah, he gave them into your hand. But you have slaughtered them in a rage that reaches to heaven.

Uriah

Jeremiah 26:20-23

(Now Uriah son of Shemaiah from Kiriath Jearim was another man who prophesied in the name of the Lord; he prophesied the same things against this city and this land as Jeremiah did. When King Jehoiakim and all his officers and officials heard his words, the king was determined to put him to death. But Uriah heard of it and fled in fear to Egypt. King Jehoiakim, however, sent Elnathan son of Akbor to Egypt, along with some other men. They brought Uriah out of Egypt and took him to King Jehoiakim, who had him struck down with a sword and his body thrown into the burial place of the common people.)

11 or 13 sons born to David in Jerusalem

2 Samuel 5:13-16
After he left Hebron, David took more concubines and wives in Jerusalem, and more sons and daughters were born to him. These are the names of the children born to him there:

Shammua,
Shobab,
Nathan,
Solomon, 
Ibhar,
Elishua,
Nepheg,
Japhia, 
Elishama, 
Eliada
and Eliphelet. 

In 1 Chronicles 14:3-7 parallel verses appear. Between Elishua and Nepheg. Elpelet and  Nogah also appear. Elisada is written as Beeliada.
. 

6 sons of King David born in Hebron and their mothers

2 Samuel 3:2-5

Sons were born to David in Hebron:

His firstborn was Amnon the son of Ahinoam of Jezreel; 

his second, Kileab the son of Abigail the widow of Nabal of Carmel;

the third, Absalom the son of Maakah daughter of Talmai king of Geshur; 

the fourth, Adonijah the son of Haggith;

the fifth, Shephatiah the son of Abital; 

and the sixth, Ithream the son of David's wife Eglah.

These were born to David in Hebron.

In 1 Chronicles 3:1-5 we have a parallel set of verses. Note that there Kileab is called Daniel.

9 or 10 types of material provided by David for the Temple

1 Chronicles 29:1-5

Then King David said to the whole assembly: "My son Solomon, the one whom God has chosen, is young and inexperienced. The task is great, because this palatial structure is not for man but for the LORD God. With all my resources I have provided for the temple of my God - 

gold for the gold work,

silver for the silver,

bronze for the bronze,

iron for the iron

and wood for the wood,

as well as onyx for the settings,

turquoise,

stones of various colours

and all kinds of fine stone and marble - all of these in large quantities.

Besides, in my devotion to the temple of my God I now give my personal treasures of gold and silver for the temple of my God, over and above everything I have provided for this holy temple: three thousand talents of gold (gold of Ophir) and seven thousand talents of refined silver, for the overlaying of the walls of the buildings,  for the gold work and the silver work, and for all the work to be done by the craftsmen. Now, who is willing to consecrate themselves to the LORD today?" 

5 men who served King David

1 Chronicles 27:32-34

Jonathan, David’s uncle, was a counselor, a man of insight and a scribe.

Jehiel son of Hakmoni took care of the king’s sons.

Ahithophel was the king’s counselor.

Hushai the Arkite was the king’s confidant.

Ahithophel was succeeded by Jehoiada son of Benaiah and by Abiathar.

Joab was the commander of the royal army.

12 officials in charge of King David's property

1 Chronicles 27:25-31

Azmaveth son of Adiel was in charge of the royal storehouses.

Jonathan son of Uzziah was in charge of the storehouses in the outlying districts, in the towns, the villages and the watchtowers. 

Ezri son of Kelub was in charge of the workers who farmed the land.

Shimei the Ramathite was in charge of the vineyards.

Zabdi the Shiphmite was in charge of the produce of the vineyards for the wine vats.

Baal-Hanan the Gederite was in charge of the olive and sycamore-fig trees in the western foothills.

Joash was in charge of the supplies of olive oil.

Shitrai the Sharonite was in charge of the herds grazing in Sharon.

Shaphat son of Adlai was in charge of the herds in the valleys.

Obil the Ishmaelite was in charge of the camels.

Jehdeiah the Meronothite was in charge of the donkeys. 

Jaziz the Hagrite was in charge of the flocks.

All these were the officials in charge of King David’s property.

12 army officers in charge of monthly divisions in King David's time

1 Chronicles 27:1-15

This is the list of the Israelites — heads of families, commanders of thousands and commanders of hundreds, and their officers, who served the king in all that concerned the army divisions that were on duty month by month throughout the year. Each division consisted of 24,000 men.

In charge of the first division, for the first month, was Jashobeam son of Zabdiel. There were 24,000 men in his division. He was a descendant of Perez and chief of all the army officers for the first month.

In charge of the division for the second month was Dodai the Ahohite; Mikloth was the leader of his division. There were 24,000 men in his division.

The third army commander, for the third month, was Benaiah son of Jehoiada the priest. He was chief and there were 24,000 men in his division. This was the Benaiah who was a mighty warrior among the Thirty and was over the Thirty. His son Ammizabad was in charge of his division.

The fourth, for the fourth month, was Asahel the brother of Joab; his son Zebadiah was his successor. There were 24,000 men in his division.

The fifth, for the fifth month, was the commander Shamhuth the Izrahite. There were 24,000 men in his division.

The sixth, for the sixth month, was Ira the son of Ikkesh the Tekoite. There were 24,000 men in his division.

The seventh, for the seventh month, was Helez the Pelonite, an Ephraimite. There were 24,000 men in his division.

The eighth, for the eighth month, was Sibbekai the Hushathite, a Zerahite. There were 24,000 men in his division.

The ninth, for the ninth month, was Abiezer the Anathothite, a Benjamite. There were 24,000 men in his division.

The tenth, for the tenth month, was Maharai the Netophathite, a Zerahite. There were 24,000 men in his division.

The eleventh, for the eleventh month, was Benaiah the Pirathonite, an Ephraimite. There were 24,000 men in his division.

The twelfth, for the twelfth month, was Heldai the Netophathite, from the family of Othniel. There were 24,000 men in his division.

4 Types of work for Levites as set out by King David

1 Chronicles 23:1-5

When David was old and full of years, he made his son Solomon king over Israel. He also gathered together all the leaders of Israel, as well as the priests and Levites. The Levites thirty years old or more were counted, and the total number of men was thirty-eight thousand. David said,

"Of these, twenty-four thousand are to be in charge of the work of the temple of the Lord

and six thousand are to be officials and judges.

Four thousand are to be gatekeepers

and four thousand are to praise the Lord with the musical instruments I have provided for that purpose."

5 and more officials in the time of King David

1 Chronicles 18:14-17

David reigned over all Israel, doing what was just and right for all his people.

Joab son of Zeruiah was over the army;

Jehoshaphat son of Ahilud was recorder;

Zadok son of Ahitub and Ahimelek son of Abiathar were priests;

Shavsha (or Seraiah) was secretary;

Benaiah son of Jehoiada was over the Kerethites and Pelethites;

and David’s sons were chief officials at the king’s side.

2 Samuel 8:15-18 reads the same except that it says that David's sons were priests (no doubt in the older sense of leaders or advisors)

30 plus mighty warriors who served David from 1 Chronicles and 2 Samuel

1 Chronicles 11:10-47

1 Chronicles 11:10-47 These were the chiefs of David's mighty warriors - they, together with all Israel, gave his kingship strong support to extend it over the whole land, as the LORD had promised - this is the list of David's mighty warriors:

Jashobeam, a Hakmonite, was chief of the officers; he raised his spear against three hundred men, whom he killed in one encounter.

Next to him was Eleazar son of Dodai the Ahohite, one of the three mighty warriors. He was with David at Pas Dammim when the Philistines gathered there for battle. At a place where there was a field full of barley, the troops fled from the Philistines. But they took their stand in the middle of the field. They defended it and struck the Philistines down, and the LORD brought about a great victory. 

Three of the thirty chiefs came down to David to the rock at the cave of Adullam, while a band of Philistines was encamped in the Valley of Rephaim. At that time David was in the stronghold, and the Philistine garrison was at Bethlehem. David longed for water and said, "Oh, that someone would get me a drink of water from the well near the gate of Bethlehem!" So the Three broke through the Philistine lines, drew water from the well near the gate of Bethlehem and carried it back to David. But he refused to drink it; instead, he poured it out to the LORD. "God forbid that I should do this!" he said. "Should I drink the blood of these men who went at the risk of their lives?" Because they risked their lives to bring it back, David would not drink it. Such were the exploits of the three mighty warriors.

Abishai the brother of Joab was chief of the Three. He raised his spear against three hundred men, whom he killed, and so he became as famous as the Three. He was doubly honoured above the Three and became their commander, even though he was not included among them.

Benaiah son of Jehoiada, a valiant fighter from Kabzeel, performed great exploits. He struck down Moab's two mightiest warriors. He also went down into a pit on a snowy day and killed a lion.  And he struck down an Egyptian who was five cubits tall. Although the Egyptian had a spear like a weaver's rod in his hand, Benaiah went against him with a club. He snatched the spear from the Egyptian's hand and killed him with his own spear. Such were the exploits of Benaiah son of Jehoiada; he too was as famous as the three mighty warriors. He was held in greater honour than any of the Thirty, but he was not included among the Three. And David put him in charge of his bodyguard.

The mighty warriors were:

Asahel the brother of Joab,

Elhanan son of Dodo from Bethlehem,

Shammoth the Harorite,

Helez the Pelonite,

Ira son of Ikkesh from Tekoa,

Abiezer from Anathoth,

Sibbekai the Hushathite,

Ilai the Ahohite,

Maharai the Netophathite,

Heled son of Baanah the Netophathite,

Ithai son of Ribai from Gibeah in Benjamin,

Benaiah the Pirathonite,

Hurai from the ravines of Gaash,

Abiel the Arbathite,

Azmaveth the Baharumite

Eliahba the Shaalbonite,

the sons of Hashem the Gizonite,

Jonathan son of Shagee the Hararite,

Ahiam son of Sakar the Hararite,

Eliphal son of Ur,

Hepher the Mekerathite,

Ahijah the Pelonite,

Hezro the Carmelite,

Naarai son of Ezbai,

Joel the brother of Nathan,

Mibhar son of Hagri,

Zelek the Ammonite,

Naharai the Berothite, the armour-bearer of Joab son of Zeruiah,

Ira the Ithrite,

Gareb the Ithrite,

Uriah the Hittite,

Zabad son of Ahlai,

Adina son of Shiza the Reubenite, who was chief of the Reubenites, and the thirty with him,

Hanan son of Maakah,

Joshaphat the Mithnite,

Uzzia the Ashterathite,

Shama

and Jeiel the sons of Hotham the Aroerite,

Jediael son of Shimri,

his brother Joha the Tizite,

Eliel the Mahavite,

Jeribai and Joshaviah the sons of Elnaam,

Ithmah the Moabite,

Eliel,

Obed

and Jaasiel the Mezobaite.

2 Samuel 23:8-39

These are the names of David's mighty warriors:

Josheb-Basshebeth, a Tahkemonite, was chief of the Three; he raised his spear against eight hundred men, whom he killed in one encounter.

Next to him was Eleazar son of Dodai the Ahohite. As one of the three mighty warriors, he was with David when they taunted the Philistines gathered at Pas Dammim for battle. Then the Israelites retreated, but Eleazar stood his ground and struck down the Philistines till his hand grew tired and froze to the sword. The LORD brought about a great victory that day. The troops returned to Eleazar, but only to strip the dead. 

Next to him was Shammah son of Agee the Hararite. When the Philistines banded together at a place where there was a field full of lentils, Israel's troops fled from them. But Shammah took his stand in the middle of the field. He defended it and struck the Philistines down, and the LORD brought about a great victory.

During harvest time, three of the thirty chief warriors came down to David at the cave of Adullam, while a band of Philistines was encamped in the Valley of Rephaim. At that time David was in the stronghold, and the Philistine garrison was at Bethlehem. David longed for water and said, "Oh, that someone would get me a drink of water from the well near the gate of Bethlehem!" So the three mighty warriors broke through the Philistine lines, drew water from the well near the gate of Bethlehem and carried it back to David. But he refused to drink it; instead, he poured it out before the LORD. "Far be it from me, LORD, to do this!" he said. "Is it not the blood of men who went at the risk of their lives?" And David would not drink it. Such were the exploits of the three mighty warriors.

Abishai the brother of Joab son of Zeruiah was chief of the Three. He raised his spear against three hundred men, whom he killed, and so he became as famous as the Three. Was he not held in greater honour than the Three? He became their commander, even though he was not included among them.

Benaiah son of Jehoiada, a valiant fighter from Kabzeel, performed great exploits. He struck down Moab's two mightiest warriors. He also went down into a pit on a snowy day and killed a lion.  And he struck down a huge Egyptian. Although the Egyptian had a spear in his hand, Benaiah went against him with a club. He snatched the spear from the Egyptian's hand and killed him with his own spear. Such were the exploits of Benaiah son of Jehoiada; he too was as famous as the three mighty warriors. He was held in greater honour than any of the Thirty, but he was not included among the Three. And David put him in charge of his bodyguard.

Among the Thirty were:

Asahel the brother of Joab,

Elhanan son of Dodo from Bethlehem,

Shammah the Harodite,

Elika the Harodite,

Helez the Paltite,

Ira son of Ikkesh from Tekoa,

Abiezer from Anathoth

Sibbekai the Hushathite,

Zalmon the Ahohite,

Maharai the Netophathite,

Heled son of Baanah the Netophathite,

Ithai son of Ribai from Gibeah in Benjamin,

Benaiah the Pirathonite,

Hiddai from the ravines of Gaash,

Abi-Albon the Arbathite,

Azmaveth the Barhumite,

Eliahba the Shaalbonite

the sons of Jashen,

Jonathan son of Shammah the Hararite,

Ahiam son of Sharar the Hararite,

Eliphelet son of Ahasbai the Maakathite,

Eliam son of Ahithophel the Gilonite,

Hezro the Carmelite,

Paarai the Arbite,

Igal son of Nathan from Zobah,

the son of Hagri,

Zelek the Ammonite,

Naharai the Beerothite, the armour-bearer of Joab son of Zeruiah,

Ira the Ithrite,

Gareb the Ithrite

and Uriah the Hittite.

There were thirty-seven in all.

The list in 1 Chronicles appears to be prior to the one in 2 Samuel at the end of David's life. This explains the 2 Samuel list being shorter and perhaps other apparent discrepancies. The exact thirty clearly changed over the years.