1 Samuel 16:11-13

Then Samuel said to Jesse, “Are all your sons here?” Jesse replied, “There is still one left, the youngest; he is tending the sheep.” Samuel said to Jesse, “Send word and bring him; because we will not sit down [to eat the sacrificial meal] until he comes here.” So Jesse sent word and brought him in. Now he had a ruddy complexion, with beautiful eyes and a handsome appearance. The LORD said [to Samuel], “Arise, anoint him; for this is he.” Then Samuel took the horn of oil and anointed David in the presence of his brothers; and the Spirit of the LORD came mightily upon David from that day forward. And Samuel arose and went to Ramah.