Joshua 9:18

18 But the Israelites did not attack the towns, for the Israelite leaders had made a vow to them in the name of the LORD, the God of Israel. The people of Israel grumbled against their leaders because of the treaty.

Joshua 9:18 Meaning and Commentary

Joshua 9:18

And the children of Israel smote them not
The inhabitants of the four cities, when they came to them, though they found it to be a true report that was brought them of their being neighbours, and that they were imposed upon by them:

because the princes of the congregation had sworn unto them by the
Lord God of Israel;
by the Word of the Lord God of Israel, as the Targum, and therefore they restrained the people from smiting and plundering them; for it was not the oath of the princes the people so much regarded, or had such an influence on them as to abstain from seizing on them, but the princes, by reason of their oath, would not suffer them to touch them:

and all the congregation murmured against the princes;
not only for taking such an oath, but chiefly because they restrained them from smiting the Gibeonites, and taking their substance for a prey; their eager desire of revenge, and of seizing their goods, and inhabiting their cities, raised a murmur in them against the princes. This is to be understood not of the whole body of the people at Gilgal, but of all that party that was sent to Gibeon, and of the princes that went with them.

Joshua 9:18 In-Context

16 Three days after making the treaty, they learned that these people actually lived nearby!
17 The Israelites set out at once to investigate and reached their towns in three days. The names of these towns were Gibeon, Kephirah, Beeroth, and Kiriath-jearim.
18 But the Israelites did not attack the towns, for the Israelite leaders had made a vow to them in the name of the LORD, the God of Israel. The people of Israel grumbled against their leaders because of the treaty.
19 But the leaders replied, “Since we have sworn an oath in the presence of the LORD, the God of Israel, we cannot touch them.
20 This is what we must do. We must let them live, for divine anger would come upon us if we broke our oath.
Holy Bible. New Living Translation copyright© 1996, 2004, 2007, 2013 by Tyndale House Foundation. Used by permission of Tyndale House Publishers Inc., Carol Stream, Illinois 60188. All rights reserved.