Hebrews 6:16

Men verily swear by him that is greater than themselves; And an oath to confirm the thing, is among them an end of all strife.

Exodus 22:11

then shall an oath of the LORD go between them, whether he have put his hand unto his neighbor's good, and the owner of it shall take the oath, and the other shall not make it good.

Genesis 14:22

And Abram answered the king of Sodom, "I lift up my hand unto the LORD God most high, possessor of heaven and earth,

Genesis 21:23

Now therefore swear unto me even here by God, that thou wilt not hurt me nor my children, nor my children's children. But that thou shalt deal with me and the country where thou art a stranger, according unto the kindness that I have showed thee."

Genesis 21:30-31

And he answered, "Seven lambs shalt thou take of my hand, that it may be a witness unto me, that I have digged this well."

Genesis 31:53

The God of Abraham, the God of Nahor, and the God of their fathers, be judge betwixt us." And Jacob sware by him that his father Isaac feared.

Joshua 9:15-20

And Joshua made peace with them, and made a covenant with them, to save their lives: and the lords of the congregation sware unto them.

2 Samuel 21:2

And the king called the Gibeonites and spake unto them. Now these Gibeonites are not of the children of Israel, but a remnant of the Amorites - and the children of Israel sware unto them. And yet Saul sought to slay them, for a zeal that he had to the children of Israel and of Judah.

Ezekiel 17:16-20

As truly as I live, sayeth the LORD God, he shall die at Babylon: in the place where the king dwelleth, that made him king, whose oath he hath despised, and whose covenant he hath broken.

Matthew 23:20-22

Whosoever therefore sweareth by the altar, sweareth by it, and by all that thereon is.

Hebrews 6:13

For when God made promise to Abraham, because he had no greater thing to swear by, he sware 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 answered, "Seven lambs shalt thou take of my hand, that it may be a witness unto me, that I have digged this well."
Genesis 31:53
The God of Abraham, the God of Nahor, and the God of their fathers, be judge betwixt us." And Jacob sware by him that his father Isaac feared.
Exodus 22:11
then shall an oath of the LORD go between them, whether he have put his hand unto his neighbor's good, and the owner of it shall take the oath, and the other shall not make it good.
Joshua 9:15
And Joshua made peace with them, and made a covenant with them, to save their lives: and the lords of the congregation sware unto them.
2 Samuel 21:2
And the king called the Gibeonites and spake unto them. Now these Gibeonites are not of the children of Israel, but a remnant of the Amorites - and the children of Israel sware unto them. And yet Saul sought to slay them, for a zeal that he had to the children of Israel and of Judah.
Ezekiel 17:16
As truly as I live, sayeth the LORD God, he shall die at Babylon: in the place where the king dwelleth, that made him king, whose oath he hath despised, and whose covenant he hath broken.

General references

Genesis 21:24
Then said Abraham, "I will swear."
Isaiah 54:9
And this must be unto me as the water of Noah. For like as I have sworn that I will not bring the water of Noah any more upon the world: so have I sworn, that I will never be angry with thee, nor reprove thee.
Micah 7:20
Thou shalt keep thy trust with Jacob, and thy mercy for Abraham, like as thou hast sworn unto our fathers long ago.
Luke 1:73
And to perform the oath, which he sware to our father Abraham, for to give us.