'Swore' in the Bible

“Be strong and courageous, for you will distribute the land I swore to their fathers to give them as an inheritance.

So Joshua established peace with them and made a treaty to let them live, and the leaders of the community swore an oath to them.

This is how we will treat them: we will let them live, so that no wrath will fall on us because of the oath we swore to them.”