Now we get a hint of it in verse 11, but if we want to see it fully, let us go back to chapter 1, verse 20. This is after she had actually prayed to God and Eli had seen her and thought she was drunk, but she was praying this prayer that she would have a son.
Remember what I said about Hebrews and their wanting to do things, do specific actions, explicit actions, rather than just say thank you. That was not enough. They felt a great obligation after especially a miracle of this consequence. And so Hannah deemed it worthy of a sacrifice of a bull—that is a big sacrifice. So they came and brought it there before the Lord at Shiloh and offered it to Him there. But she went a step farther than that, and she gave her son to God—the one who had come from her womb as a blessing because she had been barren.
Talk about a sacrifice! Talk about expressing your gratitude! I asked for him. You gave him. Now I am going to thank You by giving him back to You. Hannah was a remarkable woman. The entire series of events we see here in chapter 1 is her act of gratitude, her act of expressing her gratitude to God.