Hannah, Samuel’s mother
1 Samuel 1:1 Now there was a certain man of Ramathaim Zophim, of the hill country of Ephraim, and his name was Elkanah, the son of Jeroham, the son of Elihu, the son of Tohu, the son of Zuph, an Ephraimite. 2 He had two wives. The name of one was Hannah, and the name of other Peninnah. Peninnah had children, but Hannah had no children.
6 Her rival provoked her severely, to irritate her, because Yahweh had shut up her womb. 7 As he did so year by year, when she went up to Yahweh’s house. Her rival provoked her; therefore she wept, and didn’t eat. 8 Elkanah her husband said to her, “Hannah, why do you weep? Why don’t you eat? Why is your heart grieved? Am I not better to you than ten sons?”
9 So Hannah rose up after they had finished eating and drinking in Shiloh. Now Eli the priest was sitting on his seat by the doorpost of Yahweh’s temple. 10 She was in bitterness of soul, and prayed to Yahweh, weeping bitterly. 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.”
12 As she continued praying before Yahweh, Eli saw her mouth. 13 Now Hannah spoke in her heart. Only her lips moved, but her voice was not heard. Therefore Eli thought she was drunk. 14 Eli said to her, “How long will you be drunk? Get rid of your wine!”
15 Hannah answered, “No, my lord, I am a woman of a sorrowful spirit. I have not been drinking wine or strong drink, but I poured out my soul before Yahweh. 16 Don’t consider your servant a wicked woman; for I have been speaking out of the abundance of my complaint and my provocation.”
17 Then Eli answered, “Go in peace; and may the God of Israel grant your petition that you have asked of him.”
18 She said, “Let your servant find favor in your sight.” So the woman went her way, and ate; and her facial expression wasn’t sad any more.
19 They rose up in the morning early, and worshiped before Yahweh, and returned, and came to their house to Ramah. Then Elkanah knew Hannah his wife; and Yahweh remembered her.
20 When the time had come, Hannah conceived, and bore a son; and she named him Samuel, saying, “Because I have asked him of Yahweh.”
Elkanah apparently was a believer himself. There is no mention that he took the lead in this. Eli spoke to Hannah, not to Elkanah, and Hannah spoke to Eli, for herself. And her vow was a remarkable one – she promised a son of Elkanah to God’s service, rather than to Elkanah’s service. And the Bible doesn’t say that she consulted Elkanah in making this vow.