The Perpetual Virginity of Mary offers us a Vision of what Heaven will be like, embodied in her earthly life. It teaches us to go after the ultimate marriage that we were created for with God.
(During the homily there was a young child running free in the Church, running towards the Altar. You might notice that my homily makes mention of this.)
Why is the Perpetual Virginity of Mary a doctrine of the Catholic Church?