3 - some examples from the Old Testament

1. Three men (or angels or whatever) meet Abraham in Genesis 18
2. Three is prominent in the dreams of the chief baker and cupbearer to Pharaoh interpreted by Joseph. The cupbearer dreams of a vine with three branches on it signifying three days, the time in which Pharaoh would lift up his head and restore him to his position. The baker dreams of three baskets of bread, again standing for three days, the time in which Pharaoh would lift off his head and impale his body on a pole. (Genesis 40)
3. Thee days is the lengh of time Joseph imprisons his brothers in Egypt (Genesis 42:17)
4. Three months was Moses' age when his parents hid him (Exodus 2:2)
5. Three days is the length of time the plague of darkness lasted (Exodus 10:22, 23)
6. Three things that must be provided - (Exodus 21:11)
7. Three times a year Jewish men were to cebrate festivals to God at the Temple (Exodus 23:14, 17, 34:23, 24)
8. Three years is the length of time a tree was to be considered forbidden on entering the Promised Land (Leviticus 19:23)
9. Three times is the number of times Balaam beat his donkey when it refused to move (Numbers 22)
10. Three years was the gap between each gathering of tithes in ancient Israel (Deuteronomy 4:28)