'Profitable' in the Bible

“Will it be well for you when He investigates you [and your tactics against me]?Or will you deceive Him as one deceives a man?

“Should he argue with useless talk,Or with words which are not profitable?

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

He looketh on men, and saith, 'I sinned, And uprightness I have perverted, And it hath not been profitable to me.