Albert Barnes Commentary Numbers 27:3

"Our father died in the wilderness, and he was not among the company of them that gathered themselves together against Jehovah in the company of Korah: but he died in his own sin; and he had no sons." — Numbers 27:3 (ASV)

But died in his own sin — that is, perished under the general sentence of exclusion from the land of promise passed on all the older generation, but limited to that generation alone. By virtue of the declaration in (Numbers 14:31), the daughters of Zelophehad claim that their father’s sin should not be visited upon them.