1 Samuel 16:10-13

10Jesse had seven of his sons pass before Samuel. But Samuel said to Jesse, “The Lord has not chosen [any of] these.”

11Then 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.”

12So 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.”

13Then 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.