Commentaire sur Le Deutéronome 18:15

מקרבך מאחיך כמני [THE LORD THY GOD WILL RAISE UP UNTO THEE A PROPHET] FROM THE MIDST OF THEE, OF THY BRETHREN, LIKE UNTO ME — This means: One who is as I am, from your midst, of your brethren, יקים לך WILL HE RAISE UP UNTO THEE in my stead, and so likewise from prophet to prophet throughout all ages.

PROPHET WILL THE ETERNAL THY G-D RAISE UP UNTO THEE, FROM THE MIDST OF THEE, OF THY BRETHREN, LIKE UNTO ME. The purport of the expression from the midst of thee is to allude that prophecy is present only in the Land of Israel.²⁰¹Mechilta, at the beginning of Seder Bo. It is for this reason that Scripture speaks with reference to the Land in this term — The burden concerning the valley of ‘chizayon’ (vision),²⁰²Isaiah 22:1. and as our Rabbis have mentioned.²⁰³Pesiktha Eichah Rabbathi, 24: “It is the valley from which all seers (prophets) arose.” A similar meaning is conveyed by the expression of thy brethren, that G-d has granted you eminence over all peoples and He will put His spirit only upon you. “Like unto me, for I am from the midst of thy brethren.²⁰⁴I.e., “Just as I, Moses, am an Israelite, so will the future prophets be.” Rashi’s intent is to exclude the erroneous interpretation, like unto me in the same degree of prophecy, for the Torah has already testified, And there hath not arisen a prophet since in Israel like unto Moses (further, 34:10). The comparison means, therefore, “just as I am an Israelite etc.” (Mizrachi). — He will raise up unto thee in my stead, and so likewise from prophet to prophet.” And Rabbi Abraham ibn Ezra commented: “Like unto me, who am a prophet of G-d, and not a diviner [by clouds], nor any [other] diviner.”
It is possible that the expression from the midst of thee means that you can trust his words since he is from your brethren, from the midst of thee. Similarly, in my opinion, like unto me means that he will be established to be a prophet of the Eternal²⁰⁵I Samuel 3:20. and you will believe in him just as you believe in me. I will yet explain this.²⁰⁶In the following verse.

אליו תשמעון, if his instructions which appear to deviate from Jewish norms are meant as a temporary measure, addressing a specific emergency.