'Oath' in the Bible

The one who has innocent hands and a pure heart; the person who does not delight in what is false and does not swear an oath deceitfully.

So in my anger I declared an oath: "They are not to enter my place of rest."

So he swore an oath concerning them that he would cause them to die in the wilderness,

The LORD took an oath and will never recant: "You are a priest forever, after the manner of Melchizedek."

how he swore an oath to the LORD, vowing to the Mighty One of Jacob,

The LORD made an oath to David from which he will not retreat: "One of your sons I will set in place on your throne.