'Swearing' in the Bible

When they say, “As the Lord lives,”they are swearing falsely.

Stealing, murdering, and committing adultery, And swearing to falsehood, and giving perfume to Baal, And going after other gods whom ye knew not.

For the land is full of adulterers; for because of swearing the land mourneth; the pleasant places of the wilderness are dried up, and their course is evil, and their force is not right.