Moses
Deuteronomy 4:48BSB·traditional attribution

extending from Aroer on the rim of the Arnon Valley as far as Mount Siyon (that is, Hermon),

Matthew Henry Presbyterian @wholebiblehenry

Here is, 1. The nomination of the cities of refuge on that side Jordan where Israel now lay encamped. Three cities were appointed for that purpose, one in the lot of Reuben, another in that of Gad, and another in that of the half tribe of Manasseh, Deu 4:41-43.

Commenting on Deuteronomy 4:41-49

John Gill Reformed Baptist @doctorgill

And all the plain on this side Jordan eastward,.... The plains of Moab, on that side of Jordan to the east: even unto the sea of the plain; the sea of Sodom, the salt sea: under the springs of Pisgah; that rose from Mount Pisgah, the same with Ashdothpisgah, Deu 3:17. Next: Deuteronomy Chapter 5

Keil & Delitzsch Lutheran @keilanddelitzsch

This address, which is described in the heading as the law which Moses set before the Israelites, commences with a repetition of the decalogue, and a notice of the powerful impression which was made, through the proclamation of it by God Himself, upon the people who were assembled round Him at Horeb (Deut 5).

Commenting on Deuteronomy 4:44-49