Genesis 22:15-18

22:15 The Lord’s angel called to Abraham a second time from heaven 22:16 and said, “‘I solemnly swear by my own name,’ decrees the Lord, ‘that because you have done this and have not withheld your son, your only son, 22:17 I will indeed bless you, and I will greatly multiply your descendants so that they will be as countless as the stars in the sky or the grains of sand on the seashore. Your descendants will take possession of the strongholds of their enemies. 22:18 Because you have obeyed me, all the nations of the earth will pronounce blessings on one another using the name of your descendants.’”

Jeremiah 22:5

22:5 But, if you do not obey these commands, I solemnly swear that this palace will become a pile of rubble. I, the Lord, affirm it!”

Jeremiah 49:13

49:13 For I solemnly swear,” says the Lord, “that Bozrah will become a pile of ruins. It will become an object of horror and ridicule, an example to be used in curses. All the towns around it will lie in ruins forever.”

Amos 6:8

6:8 The sovereign Lord confirms this oath by his very own life.

The Lord, the God who commands armies, is speaking:

“I despise Jacob’s arrogance;

I hate their fortresses.

I will hand over to their enemies the city of Samaria and everything in it.”

Hebrews 6:13-18

6:13 Now when God made his promise to Abraham, since he could swear by no one greater, he swore by himself, 6:14 saying, “Surely I will bless you greatly and multiply your descendants abundantly.” 6:15 And so by persevering, Abraham inherited the promise. 6:16 For people swear by something greater than themselves, and the oath serves as a confirmation to end all dispute. 6:17 In the same way God wanted to demonstrate more clearly to the heirs of the promise that his purpose was unchangeable, and so he intervened with an oath, 6:18 so that we who have found refuge in him may find strong encouragement to hold fast to the hope set before us through two unchangeable things, since it is impossible for God to lie.