From the early Church Fathers to now.
7 Patristic · 1 Medieval
“And those, "she, being with child, cries, travailing in birth, and pained to be delivered," mean that the Church will not cease to bear from her heart the Word that is persecuted by the unbelieving in the world.”
“"She was with child and cried out in pangs of birth." This means that by her preaching [the church] desires to gather together the nations of the Gentiles. "She is in anguish for delivery" as long as [the church] is either gathering together the multitude of the Gentiles or is excluding the hypocrites from its womb.”
“"She was with child," not in her womb but in her mind, "and she cried out, groaning (in the valley of tears) and was in anguish that she might deliver." The church spiritually gives birth to those with whom she is in the pangs of childbirth, but she also never ceases to be in the pangs of childbirth with those to whom she has already given birth. For this reason the apostle says, "My little children, with whom I am again in travail until Christ be formed in you."”
“We say that the church is in birth pangs for each one of those who are being born anew through water and the Spirit, "until Christ is formed in them," as the apostle says. Those who have fallen from the true light of Christ are regarded as miscarriages and experience death at the end of their life because of unfaithfulness.”
“And being with child, she cried out in travail. The Church, spiritually, both gives birth to those she brings forth and continues to labor for those already born. As she herself says: My little children, for whom I labor in birth again until Christ is formed in you (Galatians IV).”
“And she was in pain to deliver. Thus the Lord in the Gospel: A woman, when she is in labor, has sorrow because her hour has come; but as soon as she has given birth to the child, she no longer remembers the anguish, for joy that a human being has been born into the world (John XVI). Explaining this to His disciples, He added: Therefore you now have sorrow; but I will see you again and your heart will rejoice (John XVI).”
“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]”
“And it says she was pregnant, and crying out in labor pains and anguish to give birth; and Isaiah speaks about her before she begins to labor and before the pains of childbirth come, saying she escaped and gave birth to a male child (Isa. 66:7). Gregory, in the thirteenth discourse of his Commentary on the Song of Songs concerning the Lord, says that her pregnancy remains without intercourse, and her delivery is without defilement. The birth was painless. Therefore if, according to such a great prophet and teacher of the church, the Virgin escaped the pain of labor, how then does she cry out in labor and give birth while being in anguish here? The statement is not a contradiction, far from it; for nothing could be contrary to the one and the same speaker addressing both sides. Rather, what is expressed here cries out and is troubled as you might understand. Until the divine angel spoke to Joseph about her, saying that the one conceived is from the Holy Spirit (Matt. 1:20), the Virgin was understandably distressed, having blushed [ἐρυθριῶσα] toward the one betrothed, and she was considering whether perhaps he might suspect her of secret unions causing her labor pains. Her distress and sorrow, he called, according to the laws of allegory, crying out and anguish, which is not surprising. For even the divine Moses, when he was spiritually encountering God and feeling disheartened, saw Israel in the wilderness surrounded by sea and enemies. It is said by God, "Why do you cry out to me?" (Ex. 14:15) Likewise, now the vision declares a cry concerning the sorrowful disposition in the mind and heart of the Virgin. But you, who are the pure servant and mother according to the flesh, of my Lady, the holy Mother of God [θεοτόκου], having relieved your distress through your ineffable birth, also relieve my sins; for glory belongs to you forever. Amen.”
The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.