1 Samuel 1:10-12

10 Hannah was so sad that she cried the whole time she was praying to the LORD.

11 She made a special promise to God and said, “LORD All-Powerful, you can see how sad I am. Remember me. Don’t forget me. If you will give me a son, I will give him to you. He will be yours his whole life, and as a Nazirite, he will not drink wine or strong drink,[4] and no one will ever cut his hair.”

12 Hannah prayed to the LORD a long time. Eli was watching her mouth while she was praying.