Sforno on Exodus 32:11/ספורנו על שמות ל״ב:י״א

1למה ה' יחרה אפך בעמך, Moses, does not accept that all the people have become “his” people as implied by G’d having said to him שחת עמך “your people have become corrupted.” Surely, he reasons, not all the people have sinned. Why should G’d be angry at those who did not sin, the ones who are still “G’d’s people?”