How interesting that Catholics say that but not even the Holy Spirit inspired anyone to write anything like that.
What part do you disagree with? That Jesus is the Second Person of the Trinity? Or that Mary was His mother?
This doctrine was decided at the Council of Ephesus in 431 AD to combat the heresy of Nestorianism which said that Christ was 2 distinct persons and that Mary was the bearer of Christ the man, not Christ the 2nd person of the Trinity. The doctrine was about Him, not her. By clarifying that Mary carried the Second Person of the Trinity in her womb, it said that Christ cannot be divided into 2 persons, but is one person only.
For Scripture references about Christ being God, see the Gospel of St. John. “In the beginning was the Word and the Word was with God and the Word was God.”