Matt.5.33  "Again you have heard that it was said to the men of old, `You shall not swear falsely, but shall perform to the Lord what you have sworn.'
Acts.2.30  Being therefore a prophet, and knowing that God had sworn with an oath to him that he would set one of his descendants upon his throne,
Heb.7.21  Those who formerly became priests took their office without an oath, but this one was addressed with an oath, "The Lord has sworn and will not change his mind, `Thou art a priest for ever.'"