1 Samuel 1:11, 22, 27-28

And she vowed a vow, and said, O Jehovah of hosts, if thou wilt indeed look on the affliction of thy handmaid, and remember me, and not forget thy handmaid, but wilt give unto thy handmaid a man-child, then I will give him unto Jehovah all the days of his life, and there shall no razor come upon his head.

But Hannah went not up; for she said unto her husband, I will not go up until the child be weaned; and then I will bring him, that he may appear before Jehovah, and there abide for ever.

For this child I prayed; and Jehovah hath given me my petition which I asked of him: therefore also I have granted him to Jehovah; as long as he liveth he is granted to Jehovah. And he worshipped Jehovah there.