Rashi on Deuteronomy 32:21/רש"י על דברים ל״ב:כ״א

1קנאוני means, they made My anger glow (cf. Rashi on v. 16).

2בלא אל means, with something that is not a god.

3בלא עם [I WILL MOVE THEM TO JEALOUSY] WITH THOSE WHO ARE NOT A PEOPLE — i.e. with a nation that has no reputation, as it states e.g. of the Chaldeans (Isaiah 23:13), “Behold, the land of the Chaldeans, this people was not; [the Assyrians founded it …]”, and of Esau it states (Obadia 1:2) “Thou art greatly despicable”.

4בגוי נבל אכעיסם I WILL PROVOKE THEM TO ANGER WITH A DEBASED NATION — these are the “Minim”, the heretics. So indeed, it states, (Psalms 14:1) “The heretic (נבל) hath said in his heart “There is no God” (Sifrei Devarim 320:10; Yevamot 63b).