and if allah had willed he could have made you one religion but he causes to stray whom he wills and guides whom he wills. and you will surely be questioned about what you used to do.
ولو شاء الله لجعلكم أمة واحدة ولكن يضل من يشاء ويهدي من يشاء ولتسألن عما كنتم تعملون