'Three' in the Bible

"When you have entered the land and planted all sorts of trees for food, regard its fruit as uncircumcised for the first three years for you. It is not to be eaten.

I'll command my blessing on you during the sixth year so that it will yield produce for three years!

If a person is from one month to five years old, then your valuation for a male is to be five shekels of silver, and for a female your valuation is to be three shekels of silver.