'Three' in the Bible

The horseleach hath two daughters, crying, Give, give. There are three things that are never satisfied, yea, four things say not, It is enough:

There be three things which are too wonderful for me, yea, four which I know not:

For three things the earth is disquieted, and for four which it cannot bear:

There be three things which go well, yea, four are comely in going: