1 Kings 2:43

So why haven't you kept the oath you made to the LORD, and why didn't you obey my personal order to you?"

2 Samuel 21:2

So the king called together the Gibeonites and conferred with them. Now the Gibeonites weren't part of the nation of Israel, but were the survivors from the Amorites. Although the Israelis had promised to spare them, Saul had started to execute them in his zeal for the people of Israel and Judah.

2 Chronicles 30:12

God also poured out his grace throughout Judah, giving them a dedicated heart to do what the king and princes had decreed according to the message from the LORD.

Ecclesiastes 8:2

I advise doing what the king says, especially regarding an oath to God.

Ezekiel 17:18-19

He despised the oath he had made and broke the covenant. Look! Because he willingly submitted, yet he has done all these things, he won't escape.

Romans 13:5

But if you do what is wrong, you should be afraid, for it is not without reason that they bear the sword. Indeed, they are God's servants to administer punishment to anyone who does wrong. Therefore, it is necessary for you to be acquiescent to the authorities, not only for the sake of God's punishment, but also for the sake of your own 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
So the king called together the Gibeonites and conferred with them. Now the Gibeonites weren't part of the nation of Israel, but were the survivors from the Amorites. Although the Israelis had promised to spare them, Saul had started to execute them in his zeal for the people of Israel and Judah.
Ezekiel 17:18
He despised the oath he had made and broke the covenant. Look! Because he willingly submitted, yet he has done all these things, he won't escape.

Commandment

2 Chronicles 30:12
God also poured out his grace throughout Judah, giving them a dedicated heart to do what the king and princes had decreed according to the message from the LORD.
Ecclesiastes 8:2
I advise doing what the king says, especially regarding an oath to God.
Romans 13:5
But if you do what is wrong, you should be afraid, for it is not without reason that they bear the sword. Indeed, they are God's servants to administer punishment to anyone who does wrong. Therefore, it is necessary for you to be acquiescent to the authorities, not only for the sake of God's punishment, but also for the sake of your own conscience.

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