That is, including Christians in the addition of 'eight schools and nine schools,' it was probably intended to place the Society of Jesus under Hideyoshi's political dominance in exchange for protection of faith and grant of a domain as in the case of Hongan-ji Temple and Kongobuji Temple, and Historian Masaki ANNO said that the cause could be 'a conflict between the Christian ideology and the unification concept of the Hideyoshi regime.'
すなわち「八宗九宗」の中にキリシタンを加えているのも含め、イエズス会を本願寺や金剛峯寺と同様に、信仰の保護と所領の給付と引換に秀吉による政治的支配に服属させる意図があったと考えられており、歴史学者の安野眞幸は「キリスト教のイデオロギーと秀吉政権の統一思想との衝突」が原因ではなかったかと述べている。