what could be your reason for not believing in god when the messenger calls on you to have faith in your lord and he has already made a covenant with you if indeed you are true believers?
وما لكم لا تؤمنون بالله والرسول يدعوكم لتؤمنوا بربكم وقد أخذ ميثاقكم إن كنتم مؤمنين