Judges 11:30
And Jephthah took an oath to the Lord, and said, If you will give the children of Ammon into my hands,
Genesis 28:20
Then Jacob took an oath, and said, If God will be with me, and keep me safe on my journey, and give me food and clothing to put on,
1 Samuel 1:11
And she made an oath, and said, O Lord of armies, if you will truly take note of the sorrow of your servant, not turning away from me but keeping me in mind, and will give me a man-child, then I will give him to the Lord all the days of his life, and his hair will never be cut.
Numbers 30:2-16
When a man takes an oath to the Lord, or gives an undertaking having the force of an oath, let him not go back from his word, but let him do whatever he has said he will do.
Ecclesiastes 5:1-2
Put your feet down with care when you go to the house of God, for it is better to give ear than to make the burned offerings of the foolish, whose knowledge is only of doing evil.
Ecclesiastes 5:4-5
When you take an oath before God, put it quickly into effect, because he has no pleasure in the foolish; keep the oath you have taken.