1 Kings 2:43

Why then have you not kept the oath of the Lord and the order which I gave you?

2 Samuel 21:2

Then the king sent for the Gibeonites; (now the Gibeonites were not of the children of Israel, but were the last of the Amorites, to whom the children of Israel had given an oath; but Saul, in his passion for the children of Israel and Judah, had made an attempt on their lives:)

2 Chronicles 30:12

And in Judah the power of God gave them one heart to do the orders of the king and the captains, which were taken as the word of the Lord.

Ecclesiastes 8:2

I say to you, Keep the king's law, from respect for the oath of God.

Ezekiel 17:18-19

For he put his oath on one side in letting the agreement be broken; and though he had given his hand to it, he did all these things; he will not get away safe.

Romans 13:5

So put yourselves under the authority, not for fear of wrath, but because you have the knowledge of what is right.

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
Then the king sent for the Gibeonites; (now the Gibeonites were not of the children of Israel, but were the last of the Amorites, to whom the children of Israel had given an oath; but Saul, in his passion for the children of Israel and Judah, had made an attempt on their lives:)
Ezekiel 17:18
For he put his oath on one side in letting the agreement be broken; and though he had given his hand to it, he did all these things; he will not get away safe.

Commandment

2 Chronicles 30:12
And in Judah the power of God gave them one heart to do the orders of the king and the captains, which were taken as the word of the Lord.
Ecclesiastes 8:2
I say to you, Keep the king's law, from respect for the oath of God.
Romans 13:5
So put yourselves under the authority, not for fear of wrath, but because you have the knowledge of what is right.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain