'Three' in the Bible

Have I not written to thee three times With counsels and knowledge?

To the leech are two daughters, 'Give, give, Lo, three things are not satisfied, Four have not said 'Sufficiency;'

Three things have been too wonderful for me, Yea, four that I have not known:

For three things hath earth been troubled, And for four -- it is not able to bear:

Three there are going well, Yea, four are good in going: