יבשו כל עובדי פסל המתהללים באלילים – Yeivoshu kol ovdei pesel ha’mishallelim ba’elilim. Humiliated will be all those who worship idols, who pride themselves in worthless gods.
Elilim, according to the Alshich HaKadosh, are the spiritual forces in which the pagans believed, such as: sun, moon, angels and spirits. [I think this includes any supposed spiritual entity, which in the minds of his/its believers, exists]. The pesel is the man-made graven image of these celestial forces. Since they had nothing else to believe in, they attributed whatever success they enjoyed to the powers of these gods. In the End of Days, when the pagans will be smitten by Hashem, these pagans will realize the kind of fools they had been their entire lives. They will be ashamed at their decision to worship images of stone which hold no sway whatsoever.
The Yerushalmi (Avodah Zarah 4:7) teaches that, in the future, every idol will come and spit in the faces of its worshippers. Once the idols have completed their function, they will vanish. After all is said and done, the self-made gods, which the world outside of Judaism contrives, themselves will be the ones to point out to their worshippers the folly of their beliefs.
