John Gills Exposition of the Bible Commentary - Job 31:5
If I have walked with vanity ,.... Or with vain men, as Bar Tzemach interprets it, keeping company and having fellowship with them in their vain and sinful practices; or in the vanity of his mind, indulging himself in impurity of heart and life; or rather using deceitful methods to cheat and defraud others; for this seems to be another vice Job clears himself of, acting unjustly in his dealings with men, or dealing falsely with them: or if my foot hath hasted to deceit ; to cheat men in... read more
Matthew Henry's Complete Commentary - Job 31:1-8
The lusts of the flesh, and the love of the world, are the two fatal rocks on which multitudes split; against these Job protests he was always careful to stand upon his guard. I. Against the lusts of the flesh. He not only kept himself clear from adultery, from defiling his neighbour's wives (Job 31:9), but from all lewdness with any women whatsoever. He kept no concubine, no mistress, but was inviolably faithful to the marriage bed, though his wife was none of the wisest, best, or kindest.... read more