[Arthur McGowan]

If you insist that Mary is the mother of God because she's the mother of Jesus, then you are denying Jesus' humanity and falling into the error of modalism.

Explain why saying that Mary is the mother of God denies the humanity of Jesus.

Jesus has two nature, divine and human. But he is one divine Person. So it is IMPOSSIBLE for Mary to be the mother of Jesus without being the mother of God.

[metmom]

So it is IMPOSSIBLE for Mary to be the mother of Jesus without being the mother of God.

Not true.

God has no mother.

By claiming that Mary is the mother of God, it says NOTHING about His humanity. It completely ignores it, thus denigrating the Incarnation.