New Defender's Study Bible Notes
31:40 thistles. Job is here invoking God’s primeval curse (Genesis 3:18) on his possessions if he is guilty of any known and unrepentant sin. Despite all the harsh charges of his erstwhile friends, Job insistently maintained both his faith in God and his righteous character and behavior, right up to the last.
31:40 cockle. “Stinkweed” in the Hebrew.