Necessity of Belief in Allah and His Messenger

وَمَن لَّمْ يُؤْمِنۢ بِٱللَّهِ وَرَسُولِهِۦ فَإِنَّآ أَعْتَدْنَا لِلْكَـٰفِرِينَ سَعِيرًا

And whoever has not believed in Allāh and His Messenger - then indeed, We have prepared for the disbelievers a Blaze.