John Gill Commentary Numbers 26:56

"According to the lot shall their inheritance be divided between the more and the fewer." — Numbers 26:56 (ASV)

According to the lot shall the possession thereof be divided ,
&c.] It was by the determination of the lot that the land was divided by inheritance, and that was by the Lord, according to (Proverbs 16:33)

between many and few ;
it was so ordered of the Lord by the lot, that the many should have a larger share, and the few a lesser.