Bible Verses About Oaths: Confirming covenants

They answered, "We saw very clearly that ADONAI has been with you; so we said, 'Let there be an oath between us: let's make a pact between ourselves and you

So now, come, let's make a covenant, I and you; and let it stand as a testimony between me and you."

May the God of Avraham and also the god of Nachor, the god of their father, judge between us." But Ya'akov swore by the One his father Yitz'chak feared.

Thus Y'honatan made a covenant with the family of David, adding, "May ADONAI seek its fulfillment even through David's enemies."

Y'honatan had David swear it again, because of the love he had for him - he loved him as he loved himself.