John Gill Commentary Numbers 14:32

"But as for you, your dead bodies shall fall in this wilderness." — Numbers 14:32 (ASV)

But [as for] you, your carcasses
This way of speaking seems to be used to distinguish them from their children; they shall fall in this wilderness :
which is repeated for the confirmation and certainty of it, and an emphasis is laid on the words, this which are pronounced with an accent, to put them in mind of their wish, (Numbers 14:2) .