1 Samuel 1:11

She vowed a vow, and said, “Yahweh of Armies, if you will indeed look at the affliction of your servant and remember me, and not forget your servant, but will give to your servant a boy, then I will give him to Yahweh all the days of his life, and no razor shall come on his head.”

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