Because Jesus is truly God, Mary is truly the Mother of God (in Greek, Theotokos). Mary's strong faith and her obedience to God's will brought the Son of God into the world to save us from sin and death... The Church celebrates the Solemnity of Mary, Mother of God, on New Year's Day. Masses for this holyday of obligation are as follows: Vigil Mass - 6:00 PM on Tuesday, December 31. Masses on New Year's Day, January 1, 2025, are at 8:30 AM and 6:00 PM.