The virginity of Mary was not officially declared a dogma by any church council. But three councils make an explicit mention of Mary as the Virgin Mother. It is a strong belief of people down through the centuries. The virginity of Mary is affirmed due to the intervention of the Holy Spirit. Her conception was an extraordinary sign. The one who is to be born is Son of God. So he requires a worthy body. The body touched by the Holy Spirit cannot be touched or maligned by any human persons. The perpetual virginity of Mary shows that Mary is totally reserved for her son. The mission of Mary was to sustain Jesus his death. The virginity of Mary is to be understood in its totality. She was a virgin at mind, heart and body.