Cross reference
1 Samuel 20:29
29 and he said, Let me go, I pray thee; for our family hath a sacrifice in the city; and my brother, he hath commanded me `to be there': and now, if I have found favor in thine eyes, let me get away, I pray thee, and see my brethren. Therefore he is not come unto the king's table.
1 Samuel 17:28
28 And Eliab his eldest brother heard when he spake unto the men; and Eliab's anger was kindled against David, and he said, Why art thou come down? and with whom hast thou left those few sheep in the wilderness? I know thy pride, and the naughtiness of thy heart; for thou art come down that thou mightest see the battle.