1 Samuel 1:11 KJ21

[11] 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 manchild, then I will give him unto the LORD all the days of his life, and there shall no razor come upon his head."