'Swearing' in the Bible

In that day shall there be five cities in the land of Egypt speaking the language of Canaan, and swearing by Jehovah of hosts: one shall be called, The city of Heres.

Swearing, and lying, and killing, and stealing, and committing adultery, they break out; and blood toucheth blood.

They speak mere words, swearing falsely in making a covenant; therefore shall judgment spring up as hemlock in the furrows of the fields.