וַיָּ֧שָׁב מֹשֶׁ֛ה אֶל־יְהוָ֖ה וַיֹּאמַ֑ר אֲדֹנָ֗י לָמָ֤ה הֲרֵעֹ֙תָה֙ לָעָ֣ם הַזֶּ֔ה לָ֥מָּה זֶּ֖ה שְׁלַחְתָּֽנִי׃
At bumalik si Moises sa Walang-Hanggan at sinabi: “Panginoon, bakit Mo ginawan ng masama ang bayang ito? Bakit Mo pa ako isinugo?
Rashi
למה הרעתה לעם הזה WHEREFORE HAST THOU DONE SO EVIL TO THIS PEOPLE? — And if You ask, “What concern is that of yours?” I answer “I have to complain that You have sent me at all” (Exodus Rabbah 5:22).
Ramban
ADO-NOY’, WHEREFORE HAST THOU DEALT ILL WITH THIS PEOPLE? The Divine Name is here written Aleph Dalet, for through the Proper Name of G-d, [i.e., the Tetragrammaton], which is the attribute of mercy, no evil would befall the people. However, above [in Chapter 4, Verses 10 and 13], Moses twice mentioned the Divine Name written Aleph Dalet — [Bi Ado-noy (O G-d)] — since he was praying that the anger of G-d would not be kindled against him [for refusing to undertake the mission to go to Pharaoh]. Perhaps Moses was afraid to mention the Great Divine Name that was then being revealed to him and speaking to him.
Rashbam
וישב משה אל, he returned to the spot where G’d had been speaking to him previously.