1 Kings 2:43
Why then have you not kept the oath of Yahweh, and the commandment that I have instructed you with?"
2 Samuel 21:2
The king called the Gibeonites, and said to them (now the Gibeonites were not of the children of Israel, but of the remnant of the Amorites; and the children of Israel had sworn to them: and Saul sought to kill them in his zeal for the children of Israel and Judah);
2 Chronicles 30:12
Also on Judah came the hand of God to give them one heart, to do the commandment of the king and of the princes by the word of Yahweh.
Ecclesiastes 8:2
I say, "Keep the king's command!" because of the oath to God.
Ezekiel 17:18-19
For he has despised the oath by breaking the covenant; and behold, he had given his hand, and yet has done all these things; he shall not escape.
Romans 13:5
Therefore you need to be in subjection, not only because of the wrath, but also for conscience' sake.