Joshua 18:3

Slack. These seven tribes had been accustomed to live in indolence, having their food provided for them in a miraculous manner. They were perhaps afraid lest, if the army of Israel should be divided, the different tribes would be too weak to make head against the enemy. (Calmet) --- Josue had, however, made all things easy, and they might at their leisure conquer the few towns which yet remained in the hands of the Chanaanites, if they had not cherished this indolent disposition, which was so displeasing to God, and brought upon them so many evils. (Haydock)