Deuteronomy 34:12

ולכל היד החזקה AND IN ALL THAT STRONG HAND — this refers to the fact that he received the Torah that was on the Tablets, in his hands. ולכל המורא הגדול AND IN ALL THAT GREAT TERRIBLENESS — the miracles and mighty deeds that were wrought in the great and terrible wilderness (cf. (Sifrei Devarim 357:45). לעיני כל ישראל [WHICH MOSES SHOWED] BEFORE THE EYES OF ALL ISRAEL — This refers to the fact that his heart inspired him to shatter the Tablets before their eyes, as it is said, (Deuteronomy 9:17) “And I broke them before your eyes” (Sifrei Devarim 357:45), and the opinion of the Holy One, blessed be He, regarding this action agreed with his opinion, as it is stated that God said of the Tablets, (Exodus 34:1) אשר שברת "Which you have broken", [which implies] "May your strength be fitting (יישר; an expression of thanks and congratulation) because you have broken them" (Yevamot 62a; Shabbat 87a).

וּלְכֹל֙ הַיָּ֣ד הַחֲזָקָ֔ה וּלְכֹ֖ל הַמּוֹרָ֣א הַגָּד֑וֹל אֲשֶׁר֙ עָשָׂ֣ה מֹשֶׁ֔ה לְעֵינֵ֖י כׇּל־יִשְׂרָאֵֽל׃

and in all that mighty hand, and in all the great terror which Moshe performed in the sight of all Yisra᾽el.