Matthew Poole and continuators on Joshua 18:3

3 And Joshua said unto the children of Israel, How long are ye slack to go to possess the land which the LORD God of your fathers hath given you?

This slackness is supposed to arise, partly from their dissatisfaction in the portions already allotted, Iudahs being too large, as it appeared; and Iosephs too narrow, as they complained; partly from an opinion of the impossibility of making any regular and equal distribution of the Parts, till the Whole were better known, and more exactly Surveyed, which accordingly is here done; and partly, because being weary of War, and having sufficient plenty of all things in their present condition, they grew slothful and secure, and were unwilling to run into new Hazards and Wars, as they perceived by Ioshua's answer to the Tribe of Ioseph, Ios. 17. 15, &c. they were likely to do when they entred upon their several Possessions.