1 Kings 2:43

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

2 Samuel 21:2

And the king called the Gibeonites, and said unto 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 unto them: and Saul sought to slay them in his zeal to the children of Israel and Judah.)

2 Chronicles 30:12

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

Ecclesiastes 8:2

I counsel you to keep the king's commandment, and that for the sake of your oath to God.

Ezekiel 17:18-19

Seeing he despised the oath by breaking the covenant, when, lo, he had given his hand, and has done all these things, he shall not escape.

Romans 13:5

Therefore you must be subject, not only for wrath, but also for conscience's sake.

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 said unto 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 unto them: and Saul sought to slay them in his zeal to the children of Israel and Judah.)
Ezekiel 17:18
Seeing he despised the oath by breaking the covenant, when, lo, he had given his hand, and has done all these things, he shall not escape.

Commandment

2 Chronicles 30:12
Also the hand of God was upon Judah to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.
Ecclesiastes 8:2
I counsel you to keep the king's commandment, and that for the sake of your oath to God.
Romans 13:5
Therefore you must be subject, not only for wrath, but also for conscience's sake.