1 Samuel 16:11-14

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.

14Now the Spirit of the Lord departed from Saul, and an evil spirit from the Lord tormented and terrified him.