Judges 11:30
And Jephthah made a vow to Yahweh, and he said, "If indeed you will give the {Ammonites} into my hand,
Genesis 28:20
And Jacob made a vow saying, "If God will be with me and protect me on this way that I am going, and gives me food to eat and clothing to wear,
1 Samuel 1:11
She {made a vow} and said: "O Yahweh of hosts, if you will look with compassion on the misery of your female servant, and will remember me, and not forget your female servant, and will give to your female servant {a male child} then I will give him to Yahweh all the days of his life, and a razor will never pass over his head."
Numbers 30:2-16
if a man makes a vow for Yahweh or swears an oath with a binding pledge on himself, he must not render his word invalid; he must do all that went out from his mouth.
Ecclesiastes 5:1-2
Guard your steps when you go to the house of God; draw near to listen [rather] than to offer a sacrifice of fools, for they do not know that they are doing evil.
Ecclesiastes 5:4-5
When you make a vow to God, do not delay in fulfilling it, for {he takes no pleasure} in fools. Fulfill what you vow!