1 Samuel 1:25-28
1:25 Once the bull had been slaughtered, they brought the boy to Eli.
1:26 She said, “Just as surely as you are alive, my lord, I am the woman who previously stood here with you in order to pray to the Lord.
1:27 I prayed for this boy, and the Lord has given me the request that I asked of him.
1:28 Now I dedicate him to the Lord. From this time on he is dedicated to the Lord.” Then they worshiped the Lord there.