Complex sentence: Al-Khasibi, the founder of Nusayri doctrine believed that Ardashir I was a manifestation of the Deity, he believed that Ardashir I and his son (Shapur I) were both manifestations of the Alawite trinity and that they had received divine wisdom.
Split into simpler sentences: Al-Khasibi, the founder of Nusayri doctrine believed that Ardashir I was a manifestation of the Deity. He believed that Ardashir I and his son (Shapur I) were both manifestations of the Alawite trinity and that they had received divine wisdom.