[noiseman]

She is Mother of God the Son; Jesus, fully man and fully God. Thus, she is the Mother of God. To deny this is to either deny she gave birth to Jesus, who is God, or to deny Jesus is God.

Don’t forget that Jesus existed before Mary did. Long, long, long before.

[fidelis]

"Don’t forget that Jesus existed before Mary did. Long, long, long before."

He pre-existed as the God the Son, the Second Person of the Trinity. But as Jesus, the Son of God made flesh, he was born of the Virgin Mary:

Luke 1:30-31:
"And the angel said to her, “Do not be afraid, Mary, for you have found favor with God. And behold, you will conceive in your womb and bear a son, and you shall call his name Jesus.

[Angelino97]

Don’t forget that Jesus existed before Mary did. Long, long, long before.

True.

Jesus also existed long, long, long before Israel, Israelites or Jews existed. So in that sense, He wasn't Jewish.