Thus was there a great overthrow among the children of Israel, because they were not obedient unto Judas and his brethren, but thought to do some valiant act.
WEB
There was a great overthrow among the people, because they didn’t listen to Judas and his kindred, thinking to do some exploit.
DRC
Because they did not hearken to Judas, and his brethren, thinking that they should do manfully.
LXXE
Thus was there a great overthrow among the children of Israel, because they were not obedient unto Judas and his brethren, but thought to do some valiant act.