When forced by Hideyoshi to convert with the edict for expelling Jesuit missionaries and his father Yoshitaka had taken the lead in giving up his Christian faith, Nagamasa also converted.
バテレン追放令により、秀吉から改宗を迫られ、父の孝高が率先してキリスト教を棄教すると長政自らも改宗した。