Source for meaning of parasha break in Numbers 26:1

Question

Bamidbar 26:1 is written:

וַיְהִי, אַחֲרֵי הַמַּגֵּפָה; {פ} וַיֹּאמֶר יְהוָה אֶל-מֹשֶׁה, וְאֶל אֶלְעָזָר בֶּן-אַהֲרֹן הַכֹּהֵן לֵאמֹר

The {פ} indicates a line break - in the middle of the pasuk.

It is my understanding that many modern commentators (e.g., http://www.vbm-torah.org/parsha.61/37pinchas.htm, http://www.tanach.org/bamidbar/pin/pins1.htm) understand that it's there because everyone who hasn't died yet (except Moses whose death is mentioned) will enter Israel.

What's the original source for this interpretation?

Answer 1

I believe that this is found in Sefer Chizkuni. It might date from earlier, since that work is based (in part) on the work of Rashi as well as other commentators and midrashim.