'Advantageous' in the Bible

And Jonathan spoke good of David to Saul his father, and said to him, Let not the king sin against his servant, against David, because he has not sinned against thee; for also what he did was very advantageous to thee;

If the iron hath been blunt, And he the face hath not sharpened, Then doth he increase strength, And wisdom is advantageous to make right.