noun
Old and New Testaments
Refers to the entire Christian Bible, combining the Old and New Testaments. A formal, somewhat dated term; in modern contexts, 聖書 (せいしょ) is more common.
旧新約全書はキリスト教の聖典です。
The Old and New Testaments are the sacred scriptures of Christianity.
聖書 is the standard modern word for the Bible. 旧新約全書 is a more formal, explicit term that specifies both testaments, and is less commonly used in everyday speech.
Compound of 旧約 (Old Testament), 新約 (New Testament), and 全書 (complete book). The term is a direct translation of the concept of the combined testaments.