Judges 11:30-31
Jephthah made this vow to the LORD: “If indeed You will deliver the Ammonites into my hand, / then whatever comes out the door of my house to greet me on my triumphant return from the Ammonites will belong to the LORD, and I will offer it up as a burnt offering.”

Judges 11:35
As soon as Jephthah saw her, he tore his clothes and said, “No! Not my daughter! You have brought me to my knees! You have brought great misery upon me, for I have given my word to the LORD and cannot take it back.”

Genesis 22:16-18
saying, “By Myself I have sworn, declares the LORD, that because you have done this and have not withheld your only son, / I will surely bless you, and I will multiply your descendants like the stars in the sky and the sand on the seashore. Your descendants will possess the gates of their enemies. / And through your offspring all nations of the earth will be blessed, because you have obeyed My voice.”

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 21:22-23
If a man has committed a sin worthy of death, and he is executed, and you hang his body on a tree, / you must not leave the body on the tree overnight, but you must be sure to bury him that day, because anyone who is hung on a tree is under God’s curse. You must not defile the land that the LORD your God is giving you as an inheritance.

2 Samuel 12:5-6
David burned with anger against the man and said to Nathan: “As surely as the LORD lives, the man who did this deserves to die! / Because he has done this thing and has shown no pity, he must pay for the lamb four times over.”

2 Samuel 14:11
“Please,” she replied, “may the king invoke the LORD your God to prevent the avenger of blood from increasing the devastation, so that my son may not be destroyed!” “As surely as the LORD lives,” he vowed, “not a hair of your son’s head will fall to the ground.”

2 Kings 1:16
And Elijah said to King Ahaziah, “This is what the LORD says: Is there really no God in Israel for you to inquire of His word? Is that why you have sent messengers to inquire of Baal-zebub, the god of Ekron? Therefore you will not get up from the bed on which you are lying. You will surely die.”

2 Kings 5:20-27
Gehazi, the servant of Elisha the man of God, said, “Look, my master has spared this Aramean, Naaman, by not accepting what he brought. As surely as the LORD lives, I will run after him and get something from him.” / So Gehazi pursued Naaman. And when Naaman saw him running toward him, he got down from the chariot to meet him and asked, “Is everything all right?” / “Everything is all right,” Gehazi replied. “My master has sent me to say, ‘Look, two young men from the sons of the prophets have just now come to me from the hill country of Ephraim. Please give them a talent of silver and two sets of clothing.’” ...

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

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. ...

Matthew 14:7-9
so much that he promised with an oath to give to her whatever she asked. / Prompted by her mother, she said, “Give me here on a platter the head of John the Baptist.” / The king was grieved, but because of his oaths and his guests, he ordered that her wish be granted

Mark 6:23-26
And he swore to her, “Whatever you ask of me, I will give you, up to half my kingdom!” / Then she went out and asked her mother, “What should I request?” And her mother answered, “The head of John the Baptist.” / At once the girl hurried back to the king with her request: “I want you to give me the head of John the Baptist on a platter immediately.” ...

Acts 23:12-14
When daylight came, the Jews formed a conspiracy and bound themselves with an oath not to eat or drink until they had killed Paul. / More than forty of them were involved in this plot. / They went to the chief priests and elders and said, “We have bound ourselves with a solemn oath not to eat anything until we have killed Paul.