 Furthermore, his death marked the start of a 125-year-long conflict between the "wuzurgan", a powerful group of nobility, and the kings, who both struggled for power over Iran.Initially, Shapur II was not hostile to his Christian subjects, who were led by Shemon Bar Sabbae, the Patriarch of the Church of the East, however, the conversion of Constantine the Great to Christianity caused Shapur to start distrusting his Christian subjects.He started seeing them as agents of a foreign enemy.