Joshua 9:18

And the children of Israel did not put them to death, because the chiefs of the people had taken an oath to them by the Lord, the God of Israel. And all the people made an outcry against the chiefs.

2 Samuel 21:7

But the king did not give up Mephibosheth, the son of Saul's son Jonathan, because of the Lord's oath made between David and Jonathan, the son of Saul.

Ecclesiastes 5:2

Be not unwise with your mouth, and let not your heart be quick to say anything before God, because God is in heaven and you are on the earth--so let not the number of your words be great.

Ecclesiastes 5:6

Let not your mouth make your flesh do evil. And say not before the angel, It was an error. So that God may not be angry with your words and put an end to the work of your hands.

Ecclesiastes 9:2

Because to all there is one event, to the upright man and to the evil, to the clean and to the unclean, to him who makes an offering and to him who makes no offering; as is the good so is the sinner; he who takes an oath is as he who has fear of it.

Treasury of Scripture Knowledge

Summary

And the children of Israel smote them not, because the princes of the congregation had sworn unto them by the LORD God of Israel. And all the congregation murmured against the princes.

Bible References

Had sworn

2 Samuel 21:7
But the king did not give up Mephibosheth, the son of Saul's son Jonathan, because of the Lord's oath made between David and Jonathan, the son of Saul.
Ecclesiastes 5:2
Be not unwise with your mouth, and let not your heart be quick to say anything before God, because God is in heaven and you are on the earth--so let not the number of your words be great.
Ecclesiastes 9:2
Because to all there is one event, to the upright man and to the evil, to the clean and to the unclean, to him who makes an offering and to him who makes no offering; as is the good so is the sinner; he who takes an oath is as he who has fear of it.

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