'Oath' in the Bible

Now above all, my brothers, do not swear, either by heaven or by earth or with any other oath. Your “yes” must be “yes,” and your “no” must be “no,” so that you won’t fall under judgment.

He swore an oath by the One who lives forever and ever, who created heaven and what is in it, the earth and what is in it, and the sea and what is in it: “There will no longer be an interval of time,