'Sworn' in the Bible

Thus {may God punish Abner}, {if I do not accomplish what Yahweh has sworn to David};

So the king called the Gibeonites and spoke to them. Now the Gibeonites [were] not from the {Israelites}; they [were] from the remainder of the Amorites. Now the {Israelites} had sworn to them, but Saul tried to wipe them out in his zeal for the {Israelites} and Judah.

But the king spared Mephibosheth the son of Jonathan, the son of Saul, because of the sworn oath of Yahweh which [was] between them, between David and Jonathan the son of Saul.