Genesis 21:24

And Abraham said, I will swear.

Genesis 14:13

And there came one that had escaped, and told Abram the Hebrew: now he dwelt by the oaks of Mamre, the Amorite, brother of Eshcol, and brother of Aner; and these were confederate with Abram.

Romans 12:18

If it be possible, as much as in you lieth, be at peace with all men.

Hebrews 6:16

For men swear by the greater: and in every dispute of theirs the oath is final for confirmation.

Treasury of Scripture Knowledge

Summary

And Abraham said, I will swear.

Bible References

General references

Genesis 14:13
And there came one that had escaped, and told Abram the Hebrew: now he dwelt by the oaks of Mamre, the Amorite, brother of Eshcol, and brother of Aner; and these were confederate with Abram.
Romans 12:18
If it be possible, as much as in you lieth, be at peace with all men.
Hebrews 6:16
For men swear by the greater: and in every dispute of theirs the oath is final for confirmation.

American Standard Version Public Domain