James 5:12
Above all, my brothers, do not swear, not by heaven or earth or by any other oath. Simply let your “Yes” be yes, and your “No,” no, so that you will not fall under judgment.

Matthew 23:16-22
Woe to you, blind guides! You say, ‘If anyone swears by the temple, it means nothing; but if anyone swears by the gold of the temple, he is bound by his oath.’ / You blind fools! Which is greater: the gold, or the temple that makes it sacred? / And you say, ‘If anyone swears by the altar, it means nothing; but if anyone swears by the gift on it, he is bound by his oath.’ ...

Isaiah 66:1
This is what the LORD says: “Heaven is My throne, and earth is My footstool. What kind of house will you build for Me? Or where will My place of repose be?

Acts 7:49
‘Heaven is My throne and the earth is My footstool. What kind of house will you build for Me, says the Lord, or where will My place of repose be?

Ecclesiastes 5:2-5
Do not be quick to speak, and do not be hasty in your heart to utter a word before God. For God is in heaven and you are on earth. So let your words be few. / As a dream comes through many cares, so the speech of a fool comes with many words. / When you make a vow to God, do not delay in fulfilling it, because He takes no pleasure in fools. Fulfill your vow. ...

Leviticus 19:12
You must not swear falsely by My name and so profane the name of your God. I am the LORD.

Numbers 30:2
If a man makes a vow to the LORD or swears an oath to obligate himself by a pledge, he must not break his word; he must do everything he has promised.

Deuteronomy 23:21-23
If you make a vow to the LORD your God, do not be slow to keep it, because He will surely require it of you, and you will be guilty of sin. / But if you refrain from making a vow, you will not be guilty of sin. / Be careful to follow through on what comes from your lips, because you have freely vowed to the LORD your God with your own mouth.

Psalm 50:14
Sacrifice a thank offering to God, and fulfill your vows to the Most High.

Psalm 76:11
Make and fulfill your vows to the LORD your God; let all the neighboring lands bring tribute to Him who is to be feared.

Jeremiah 7:9-11
Will you steal and murder, commit adultery and perjury, burn incense to Baal, and follow other gods that you have not known, / and then come and stand before Me in this house, which bears My Name, and say, ‘We are delivered, so we can continue with all these abominations’? / Has this house, which bears My Name, become a den of robbers in your sight? Yes, I too have seen it, declares the LORD.

Zechariah 8:17
do not plot evil in your hearts against your neighbor, and do not love to swear falsely, for I hate all these things,” declares the LORD.

2 Corinthians 1:17-20
When I planned this, did I do it carelessly? Or do I make my plans by human standards, so as to say “Yes, yes” and also “No, no”? / But as surely as God is faithful, our message to you is not “Yes” and “No.” / For the Son of God, Jesus Christ, who was proclaimed among you by me and Silvanus and Timothy, was not “Yes” and “No,” but in Him it has always been “Yes.” ...

Hebrews 6:16-18
Men swear by someone greater than themselves, and their oath serves as a confirmation to end all argument. / So when God wanted to make the unchanging nature of His purpose very clear to the heirs of the promise, He guaranteed it with an oath. / Thus by two unchangeable things in which it is impossible for God to lie, we who have fled to take hold of the hope set before us may be strongly encouraged.

Romans 14:11
It is written: “As surely as I live, says the Lord, every knee will bow before Me; every tongue will confess to God.”