If we look to the longer reading, it says that the prophet spoke “things that have been hidden since the foundation of the world.” This was a quotation from Psalm 78:2: “I will open my mouth in a parable; I will utter dark sayings from of old.” “Sayings from of old” is likely speaking about forgotten truths from the nation of Israel's past.
For many Catholics, the very idea or thought of Mary’s having sexual intercourse with Joseph, her husband, is unthinkable, unimaginable, and shocking. This is because the whole attitude of the Catholic church concerning sex and sexual intercourse is that it isn't even to be spoken of, as the average Catholic has the impression that a good Catholic person cannot really be holy if he or she has intercourse, even within wedlock. But are marriage and holiness incompatible? What does the Bible teach or say?