וּמֹשֶׁ֗ה הָיָ֥ה רֹעֶ֛ה אֶת־צֹ֛אן יִתְר֥וֹ חֹתְנ֖וֹ כֹּהֵ֣ן מִדְיָ֑ן וַיִּנְהַ֤ג אֶת־הַצֹּאן֙ אַחַ֣ר הַמִּדְבָּ֔ר וַיָּבֹ֛א אֶל־הַ֥ר הָאֱלֹהִ֖ים חֹרֵֽבָה׃
Si Moises ay nagpapastol ng kawan ni Jetro na kanyang biyenan, ang saserdote ng Midian; at inakay niya ang kawan sa kabilang dako ng ilang, at nakarating siya sa bundok ng Diyos, sa Horeb.
Rashi
אחר המדבר [HE LED THE SHEEP] BEHIND THE DESERT — in order to keep them away from private property (גֶזֵל i. e. things which can be appropriated only as the result of “robbery”) — that they should not graze in other people’s fields (Exodus Rabbah 2:3).
Alshekh
And he arrived at the Mountain of God. Because of his secluded prayer in that place it merited to become the Mountain of God. Moshe traveled the far distance to Sinai because Yisro was still a priest of Midian.
Da'at Zekenim
וינהג את הצאן, “he led the flock after the desert.” The choice of the word אחר here is to serve as a hint that when G–d’s flock in the desert, i.e. the generation that left Egypt as adults had all died, and he had been buried where they had been buried, in the desert, He could bring the next generation to the land of Israel right away; this is why the verse ends with describing the mountain where Moses stood as being already “the Mountain of G–d.”