1 Kings 8:31
If any man trespass against his neighbor, and an oath be laid upon him to cause him to swear, and the oath come before thine altar in this house:
1 Kings 18:10
As the LORD thy God liveth, there is no nation or kingdom, whither my lord hath not sent to seek thee: and when they said, He is not there; he took an oath of the kingdom and nation, that they found thee not.