1 Samuel 16:3

16:3 Then invite Jesse to the sacrifice, and I will show you what you should do. You will anoint for me the one I point out to you.”

1 Samuel 16:12-13

16:12 So Jesse had him brought in. Now he was ruddy, with attractive eyes and a handsome appearance. The Lord said, “Go and anoint him. This is the one!” 16:13 So Samuel took the horn full of olive oil and anointed him in the presence of his brothers. The Spirit of the Lord rushed upon David from that day onward. Then Samuel got up and went to Ramah.