consequences of rejecting monotheism

وَلَمْ يَكُن لَّهُم مِّن شُرَكَآئِهِمْ شُفَعَـٰٓؤُا۟ وَكَانُوا۟ بِشُرَكَآئِهِمْ كَـٰفِرِينَ

And there will not be for them among their [alleged] partners any intercessors, and they will [then] be disbelievers in their partners.