GOD'S WORD® Translation
The Israelites didn't destroy these other people, because the leaders of the congregation had sworn an oath about them to the LORD God of Israel. The whole congregation complained about the leaders.

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

Berean Study Bible
But the Israelites did not attack them, because the leaders of the congregation had sworn an oath to them by the LORD, the God of Israel. And the whole congregation grumbled against the leaders.

Douay-Rheims Bible
And they slew them not, because the princes of the multitude had sworn in the name of the Lord the God of Israel. Then all the common people murmured against the princes.

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

King James Bible
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.

World English Bible
The children of Israel didn't strike them, because the princes of the congregation had sworn to them by Yahweh, the God of Israel. All the congregation murmured against the princes.

Young's Literal Translation
and the sons of Israel have not smitten them, for sworn to them have the princes of the company by Jehovah God of Israel, and all the company murmur against the princes.

Joshua 9:18 Additional Translations ...