Bible Verses About Oaths: Confirming covenants

And they said, We saw plainly that Jehovah was with thee: and we said, Let there now be an oath betwixt us, even betwixt us and thee, and let us make a covenant with thee,

And now come, let us make a covenant, I and thou; and let it be for a witness between me and thee.

The God of Abraham, and the God of Nahor, the God of their father, judge betwixt us. And Jacob sware by the Fear of his father Isaac.

So Jonathan made a covenant with the house of David, saying, And Jehovah will require it at the hand of David’s enemies.

And Jonathan caused David to swear again, for the love that he had to him; for he loved him as he loved his own soul.