أَمۡوَٰتٌ غَيۡرُ أَحۡيَآءٖۖ وَمَا يَشۡعُرُونَ أَيَّانَ يُبۡعَثُونَ ٢١
They are [in fact] dead,1 not alive, and they do not perceive when they will be resurrected.
Translation: Saheeh International (English)
1 i.e., inanimate or without understanding.
Each word's meaning and sound
Despite the fact that the idol worshippers made their gods with their own hands, they are also lifeless things that have no life nor knowledge. They do not know when they will be resurrected with their worshippers on the Day of Judgement, to be thrown together with them into the fire of Hell.
Al-Mukhtasar in interpreting the Noble Quran