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.

Ecclesiastes 5:4-5
When you make a vow to God, do not delay in fulfilling it, because He takes no pleasure in fools. Fulfill your vow. / It is better not to vow than to make a vow and not fulfill it.

Matthew 5:33-37
Again, you have heard that it was said to the ancients, ‘Do not break your oath, but fulfill your vows to the Lord.’ / But I tell you not to swear at all: either by heaven, for it is God’s throne; / or by the earth, for it is His footstool; or by Jerusalem, for it is the city of the great King. ...

Acts 5:1-4
Now a man named Ananias, together with his wife Sapphira, also sold a piece of property. / With his wife’s full knowledge, he kept back some of the proceeds for himself, but brought a portion and laid it at the apostles’ feet. / Then Peter said, “Ananias, how is it that Satan has filled your heart to lie to the Holy Spirit and withhold some of the proceeds from the land? ...

Malachi 1:14
“But cursed is the deceiver who has an acceptable male in his flock and vows to give it, but sacrifices a defective animal to the Lord. For I am a great King,” says the LORD of Hosts, “and My name is to be feared among the nations.

Proverbs 20:25
It is a trap for a man to dedicate something rashly, only later to reconsider his vows.

Joshua 9:18-20
But the Israelites did not attack them, because the leaders of the congregation had sworn an oath to them by the LORD, the God of Israel. And the whole congregation grumbled against the leaders. / All the leaders answered, “We have sworn an oath to them by the LORD, the God of Israel, and now we cannot touch them. / This is how we will treat them: We will let them live, so that no wrath will fall on us because of the oath we swore to them.”

2 Samuel 21:1-2
During the reign of David there was a famine for three successive years, and David sought the face of the LORD. And the LORD said, “It is because of the blood shed by Saul and his family, because he killed the Gibeonites.” / At this, David summoned the Gibeonites and spoke to them. (Now the Gibeonites were not Israelites, but a remnant of the Amorites. The Israelites had taken an oath concerning them, but in his zeal for Israel and Judah, Saul had sought to kill them.)

Psalm 15:4
who despises the vile but honors those who fear the LORD, who does not revise a costly oath,

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.’ ...

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.

Romans 12:1
Therefore I urge you, brothers, on account of God’s mercy, to offer your bodies as living sacrifices, holy and pleasing to God, which is your spiritual service of worship.

Hebrews 10:26-31
If we deliberately go on sinning after we have received the knowledge of the truth, no further sacrifice for sins remains, / but only a fearful expectation of judgment and of raging fire that will consume all adversaries. / Anyone who rejected the law of Moses died without mercy on the testimony of two or three witnesses. ...

1 Corinthians 6:19-20
Do you not know that your body is a temple of the Holy Spirit who is in you, whom you have received from God? You are not your own; / you were bought at a price. Therefore glorify God with your body.