'Swore' in the Bible

Be strong and courageous, for you shall give this people possession of the land which I swore to their fathers to give them.

Joshua made peace with them and made a covenant with them, to let them live; and the leaders of the congregation swore an oath to them.

This we will do to them, even let them live, so that wrath will not be upon us for the oath which we swore to them.”

So Moses swore on that day, saying, ‘Surely the land on which your foot has trodden will be an inheritance to you and to your children forever, because you have followed the Lord my God fully.’