26/07/2026
Why Catholics Call Mary "Mother of God"
Some find this title puzzling, since Mary is not the origin of God, who has no beginning. But the title "Mother of God" isn't about Mary's divinity; it's about Jesus. Since Jesus is one Person who is fully God and fully man, and Mary is His mother, she is rightly called the Mother of God, not because she predates God, but because the child she bore is God Himself.(Trinitarian God)
This truth was formally affirmed at the Council of Ephesus in 431, largely to protect the identity of Christ, not to elevate Mary above her place. If we said Mary was only the "Mother of Christ's humanity," it would suggest Jesus was somehow split into two persons, one divine and one human. Calling her Mother of God safeguards the truth that Jesus is one undivided Person from the very moment of His conception, as St. John reminds us: "the Word became flesh and dwelt among us" (John 1:14).
Scripture points to this from the very beginning of the Gospel. When Mary visits Elizabeth, "filled with the Holy Spirit," Elizabeth greets her with the words, "Why is this granted to me, that the mother of my Lord should come to me?" (Luke 1:41-43). Elizabeth wasn't confused about who God was; she was recognizing, by the Spirit, exactly who Mary was carrying. St. Paul reinforces this when he writes that God "sent forth his Son, born of woman" (Galatians 4:4), affirming that the Son who is eternally God was truly born of Mary. And in the prophecy given to Isaiah, centuries before, we read of the child to come: "and his name shall be called... Mighty God" (Isaiah 9:6), the very child Mary would bear.