宗しゅう旨し替がえ

noun, noun or participle which takes 'suru', intransitive verb

religious conversion; change of denomination

Specifically refers to changing one's religion or sect, often used in historical or formal contexts.

• 江え戸ど時じ代だいには、キリスト教きょうへの宗しゅう旨し替がえは厳きびしく禁きんじられていた。

  In the Edo period, conversion to Christianity was strictly forbidden.

noun, noun or participle which takes 'suru', intransitive verb

change of ideology; switch in taste or interest

Extended figurative use: a shift in one's beliefs, preferences, or loyalties, often implying a complete turnaround.

• 彼かれは突とつ然ぜん、政せい治じ的てきな宗しゅう旨し替がえをして、野や党とうに加くわわった。

  He suddenly switched his political allegiance and joined the opposition party.

• 健けん康こうのために、甘あま党とうから辛から党とうに宗しゅう旨し替がえした。

  For my health, I switched from a sweet tooth to preferring spicy food.