okayas logic here is basically, kiritaka accepts (being assaulted by) him -> kiritaka loves okaya and must literally be jesus -> anybody who thinks kiritaka actually hated him is denying his divine nature and thus is a heretic -> maria thinks kiritaka hated okaya and would want to be avenged -> maria is a heretic and could never give birth to kiritaka's second coming -> run into maria while wearing a bomb vest and be greeted in heaven by 72 kiritaka-kuns
I'm actually praying that Maria just kills Okaya quickly, no flashy death, no satisfaction for him and then Maria takes her time killing Okaya's pyscho mom.