Verses with the word profitable in the Old Testament (4 verses):

Job 22:2
Can a man be profitable unto God, as he that is wise may be profitable unto himself?

Ecclesiastes 10:10
If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.

Isaiah 44:10
Who hath formed a god, or molten a graven image that is profitable for nothing?

Jeremiah 13:7
Then I went to Euphrates, and digged, and took the girdle from the place where I had hid it: and, behold, the girdle was marred, it was profitable for nothing.