1 Kings 2:43

Why then hast thou not kept the oath of Jehovah, and the commandment that I charged thee with?

2 Samuel 21:2

And the king called the Gibeonites, and spoke to them. (Now the Gibeonites were not of the children of Israel, but of the remainder of the Amorites; and the children of Israel had sworn to them; and Saul sought to smite them in his zeal for the children of Israel and Judah.)

2 Chronicles 30:12

The hand of God was also upon Judah to give them one heart to do the commandment of the king and of the princes, by the word of Jehovah.

Ecclesiastes 8:2

I say, Keep the king's commandment, and that on account of the oath of God.

Ezekiel 17:18-19

He despised the oath, and broke the covenant; and behold, he had given his hand, yet hath he done all these things: he shall not escape.

Romans 13:5

Wherefore it is necessary to be subject, not only on account of wrath, but also on account of conscience.

Treasury of Scripture Knowledge

Summary

Why then hast thou not kept the oath of the LORD, and the commandment that I have charged thee with?

Bible References

Why

2 Samuel 21:2
And the king called the Gibeonites, and spoke to them. (Now the Gibeonites were not of the children of Israel, but of the remainder of the Amorites; and the children of Israel had sworn to them; and Saul sought to smite them in his zeal for the children of Israel and Judah.)
Ezekiel 17:18
He despised the oath, and broke the covenant; and behold, he had given his hand, yet hath he done all these things: he shall not escape.

Commandment

2 Chronicles 30:12
The hand of God was also upon Judah to give them one heart to do the commandment of the king and of the princes, by the word of Jehovah.
Ecclesiastes 8:2
I say, Keep the king's commandment, and that on account of the oath of God.
Romans 13:5
Wherefore it is necessary to be subject, not only on account of wrath, but also on account of conscience.