This is not the first appearance of this phrase in the book. The same phrase was used at the start of the book, where the people of Israel went each to his inheritance
in order to take possession of the land after Joshua dismissed them (Judges 2:6). The irony is that now we have in effect a reversal of the conquest, where Israelites go to their tribal allotments with new wives, but not really possessing the Promised Land.1 Israel has reached the high point of complete Canaanization.
24 And the people of Israel departed from there at that time, every man to his tribe and family, and they went out from there every man to his inheritance.