From among the descendants of Eve, God chose the Virgin Mary to be the mother of his Son. “Full of grace”, Mary is “the most excellent fruit of redemption”1: from the first instant of her conception, she was totally preserved from the stain of original sin and she remained pure from all personal sin throughout her life.
Mary is truly “Mother of God” since she is the mother of the eternal Son of God made man, who is God himself.
SC 103.
St. Augustine, Serm. 186, 1: PL 38, 999.
Lk 1:38.
LG 56.
STh III, 30, 1.