Judges 11:30
And Jephthah vowed a vow unto the LORD and said, If thou shalt without fail deliver the sons of Ammon into my hands,
Genesis 28:20
And Jacob vowed a vow, saying, If God will be with me and will keep me in this way that I go and will give me bread to eat and clothing to put on
1 Samuel 1:11
and she vowed a vow and said, O LORD of the hosts, if thou wilt indeed look on the affliction of thy handmaid and remember me and not forget thy handmaid but wilt give unto thy handmaid a man child, then I will give him unto the LORD all the days of his life, and no razor shall come upon his head.
Numbers 30:2-16
When a man vows a vow unto the LORD or swears an oath to bind his soul with a bond, he shall not defile his word: he shall do according to all that proceeded out of his mouth.
Ecclesiastes 5:1-2
Watch thy feet when thou goest to the house of God and draw near with more willingness to hear than to give the sacrifice of fools, for they do not know how to do what God wants.
Ecclesiastes 5:4-5
When thou dost vow a vow unto God, do not defer to pay it; for he has no pleasure in fools; pay that which thou hast vowed.