Alcuin of York — on Rev 21:9 (QUESTIONS AND ANSWERS MANUAL ON REVELATION)

“THERE FOLLOWS: Come; I will shew thee the bride, the wife of the Lamb. ANSWER: By the bride and wife he means the Church, which, while remaining unstained, is always engendering spiritual children to God; or he may also call it so because it is now espoused to God, and is then to be led to the immortal nuptials.”