and had allah willed he could have made them all upon one religion but he admits whomever he wills into his mercy and the unjust do not have any friend nor any supporter.
ولو شاء الله لجعلهم أمة واحدة ولكن يدخل من يشاء في رحمته والظالمون ما لهم من ولي ولا نصير