church history
Refers to the academic field or a written account of the history of the Christian church.
彼は大学で教会史を専攻している。
He is majoring in church history at university.
この本は初期キリスト教の教会史を詳しく解説している。
This book explains the church history of early Christianity in detail.
Compound of 教会 (church) + 史 (history).