The Land Was To Be Divided By Lot As An Inheritance (Numbers 26:55-56).
Dividing land by lots was an ancient practise in use in many civilisations. It was especially important in this case so that the people might know that they were receiving the land allocated to them by Yahweh, and that there was no favouritism.
‘Notwithstanding, the land shall be divided by lot: according to the names of the tribes of their fathers they shall inherit.'
So the land was to be divided by lot, which would be decided by Yahweh (Proverbs 16:33; Proverbs 18:18), according to the number of their clans and their size. That is what the inheritance would be based on. The lot in mind was probably the Urim and Thummim.
‘According to the lot shall their inheritance be divided between the more and the fewer.'
For during the use of the lot the number of families in each tribe and clan would be kept in mind. The larger clans would receive the more, the smaller clans the less. But the actual siting would be by lot.