6 It happened, when they had come, that he looked at Eliab, and said, “Surely Yahweh’s anointed is before him.” 7 But Yahweh said to Samuel, “Don’t look on his face, or on the height of his stature; because I have rejected him: for Yahweh sees not as man sees; for man looks at the outward appearance, but Yahweh looks at the heart.” 8 Then Jesse called Abinadab, and made him pass before Samuel. He said, “Neither has Yahweh chosen this one.” 9 Then Jesse made Shammah to pass by. He said, “Neither has Yahweh chosen this one.” 10 Jesse made seven of his sons to pass before Samuel. Samuel said to Jesse, “Yahweh has not chosen these.” 11 Samuel said to Jesse, “Are all your children here?”
He said, “There remains yet the youngest, and behold, he is keeping the sheep.”
Samuel said to Jesse, “Send and get him; for we will not sit down until he comes here.” 12 He sent, and brought him in. Now he was ruddy, and withal of a beautiful face, and goodly to look on. Yahweh said, “Arise, anoint him; for this is he.” 13 Then Samuel took the horn of oil, and anointed him in the midst of his brothers: and the Spirit of Yahweh came mightily on David from that day forward. So Samuel rose up, and went to Ramah.
Matthew Henry's Commentary on 1 Samuel 16:6-13
Commentary on 1 Samuel 16:6-13
(Read 1 Samuel 16:6-13)
It was strange that Samuel, who had been so disappointed in Saul, whose countenance and stature recommended him, should judge of another man by that rule. We can tell how men look, but God can tell what they are. He judges of men by the heart. We often form a mistaken judgment of characters; but the Lord values only the faith, fear, and love, which are planted in the heart, beyond human discernment. And God does not favour our children according to our fond partiality, but often most honours and blesses those who have been least regarded. David at length was pitched upon. He was the youngest of the sons of Jesse; his name signifies Beloved; he was a type of God's beloved Son. It should seem, David was least set by of all the sons of Jesse. But the Spirit of the Lord came upon David from that day forward. His anointing was not an empty ceremony, a Divine power went with that instituted sign; he found himself advanced in wisdom and courage, with all the qualifications of a prince, though not advanced in his outward circumstances. This would satisfy him that his election was of God. The best evidence of our being predestinated to the kingdom of glory, is, our being sealed with the Spirit of promise, and experience of a work of grace in our hearts.