1 Samuel 1:10-11

10Hannah was very upset as she prayed to the Lord. She could not stop weeping.

11She made a promise to God. She prayed, ‘Lord Almighty, you can see how sad I am. Please be kind to me, your servant. Remember me and do not forget me. Please give a son to me, your servant. If you do that, I will give him to serve you for all of his life. Nobody will ever cut his hair.’