4 Bible Verses about Political Alliances, By Oaths

And Jonathan will cut out with the house of David, and Jehovah sought out from the hand of David's enemies. And Jonathan will add to cause David to swear in his loving him; as loving his soul he loved him.

And now swear to me in God, whether if thou shalt lie to me and to my progeny, and to my progenies; according to the kindness which I did to thee, thou shalt do to me, and to the land in which thou didst sojourn in it

And they will say, Seeing we saw that Jehovah was with thee: and we will say, There shall be an oath between us, between us and between thee, and we will make a covenant with thee. Wilt thou do evil to us as that we touched thee not, as that we did to thee only good, and we sent thee away in peace, thou now art praised of Jehovah. And he will make to them a drinking, and they will eat and drink.read more.
And they will rise early in the morning, and they will swear, a man to his brother, and Isaak will send them away and they will go from him in peace.

And Joshua will make peace to them, and will cut out to them a covenant to preserve them alive: and the chiefs of the assembly sware to them. And it will be from the end of three days after they cut out a covenant to them, and they will hear that they are near to him, and they dwell in the midst of him. And the sons of Israel will remove and will come to their cities in the third day. And their cities, Gibe-on and Chephirah and Barith, and Kirjath-Jearim.read more.
And the sons of Israel smote them not, for the chiefs of the assembly sware to them by Jehovah the God of Israel. And all the assembly will murmur against the chiefs. And all the chiefs will say to all the assembly, We sware to them by Jehovah the God of Israel: and now we shall not be able to touch upon them. This we will do to them, and preserve them alive; and anger shall not be upon us for the oath that we sware to them.