Hebrews 6:16

For men at all times make their oaths by what is greater; and any argument is ended by the decision of the oath.

Exodus 22:11

If he takes his oath before the Lord that he has not put his hand to his neighbour's goods, the owner is to take his word for it and he will not have to make payment for it.

Genesis 14:22

But Abram said to the king of Sodom, I have taken an oath to the Lord, the Most High God, maker of heaven and earth,

Genesis 21:23

Now, then, give me your oath, in the name of God, that you will not be false to me or to my sons after me, but that as I have been good to you, so you will be to me and to this land where you have been living.

Genesis 21:30-31

And he said, Take these seven lambs from me as a witness that I have made this water-hole.

Genesis 31:53

May the God of Abraham and the God of Nahor, the God of their father, be our judge. Then Jacob took an oath by the Fear of his father Isaac.

Joshua 9:15-20

So Joshua made peace with them, and made an agreement with them that they were not to be put to death: and the chiefs of the people took an oath to them.

2 Samuel 21:2

Then the king sent for the Gibeonites; (now the Gibeonites were not of the children of Israel, but were the last of the Amorites, to whom the children of Israel had given an oath; but Saul, in his passion for the children of Israel and Judah, had made an attempt on their lives:)

Ezekiel 17:16-20

By my life, says the Lord, truly in the place of the king who made him king, whose oath he put on one side and let his agreement with him be broken, even in Babylon he will come to his death.

Matthew 23:20-22

He, then, who takes an oath by the altar, takes it by the altar and by all things on it.

Hebrews 6:13

For when God made his oath to Abraham, because there was no greater oath, he made it by himself,

Treasury of Scripture Knowledge

Summary

For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.

Bible References

An oath

Genesis 21:30
And he said, Take these seven lambs from me as a witness that I have made this water-hole.
Genesis 31:53
May the God of Abraham and the God of Nahor, the God of their father, be our judge. Then Jacob took an oath by the Fear of his father Isaac.
Exodus 22:11
If he takes his oath before the Lord that he has not put his hand to his neighbour's goods, the owner is to take his word for it and he will not have to make payment for it.
Joshua 9:15
So Joshua made peace with them, and made an agreement with them that they were not to be put to death: and the chiefs of the people took an oath to them.
2 Samuel 21:2
Then the king sent for the Gibeonites; (now the Gibeonites were not of the children of Israel, but were the last of the Amorites, to whom the children of Israel had given an oath; but Saul, in his passion for the children of Israel and Judah, had made an attempt on their lives:)
Ezekiel 17:16
By my life, says the Lord, truly in the place of the king who made him king, whose oath he put on one side and let his agreement with him be broken, even in Babylon he will come to his death.

General references

Genesis 21:24
And Abraham said, I will give you my oath.
Isaiah 54:9
For this is like the days of Noah to me: for as I took an oath that the waters of Noah would never again go over the earth, so have I taken an oath that I will not again be angry with you, or say bitter words to you.
Micah 7:20
You will make clear your good faith to Jacob and your mercy to Abraham, as you gave your oath to our fathers from times long past.
Luke 1:73
The oath which he made to Abraham, our father,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain