It is not in accord with scriptures, and is accursed. Mary is not mentioned as the most honourable believer in Scriptures. The angel Gabriel in Luke never stated that Mary is more blessed than any other creatures, or Christ Himself. No mentioning that Mary will be great. God the Father is not said to have knew her, come upon her, or joined with her.
All christians are slaves of the Most High.
No differentiation for Mary. He is Alpha and Omega - Worship God. Fear God and keep His commandments. That applies to all. Man is created in the image of God, and woman is from man.