The Mary in which Catholics worship is not the Mary of the Bible. Biblically, Mary was only human. God chose her to be a vessel to bring His beloved Son into the world. But Roman Catholics bow down to statues of Mary, exonerate and venerate her more than Christ Jesus.
In Exodus 20:4,5 God said, "Thou shalt not make unto thee any graven image or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: Thou shalt not bow down thyself to them..." Mary would never be a part of this! She was not there when Christ created the universe. Christ was God long before she was ever born. Bowing to Mary is a sin!
