'Oath' in the Bible

But because the Lord loves you and is keeping the oath which He swore to your fathers, the Lord has brought you out with a mighty hand and redeemed (bought) you from the house of slavery, from the hand of Pharaoh king of Egypt.

so that you may enter into the covenant of the Lord your God, and into His oath and agreement which the Lord your God is making with you today,

It will happen that when he (a renegade) hears the words of this oath, and he imagines himself as blessed, saying, ‘I will have peace and safety even though I walk within the stubbornness of my heart [rejecting God and His law], in order that the watered land dwindles away along with the dry [destroying everything],’