Alcuin of York — on Rev 12:2 (COMMENTARY ON REVELATION)

“And being with child, she cried travailing in birth, and was in pain to be delivered. This cannot refer specifically to blessed Mary, but it refers to the Church, which suffers here a certain difficulty in childbirth when it tries to give birth once again to people it had already given birth to, until, according to the apostle's saying, we all meet unto a perfect man. [Eph. 4:13]”