When Jesus said, “Everyone then who hears these words of mine and acts on them will be like a wise man who built his house on rock” (Mt 7:24), He likely had a specific house in mind—His own house in Nazareth where He grew up. The footings of many of Nazareth’s houses are lodged, even today, into the dense bed of rock that lies under much of the town. Ancient tradition holds that the Virgin Mary was raised in Nazareth, was visited by the Archangel Gabriel in her home there, and then lived in that same home with her husband, Joseph, and her son, Jesus.
Tradition holds that the Holy House arrived in Loreto on Dec. 10, 1294, after a miraculous rescue from the Holy Land as the Crusaders were driven out of Palestine at the end of the 13th century.
Related reading - How could the Holy House of Mary in Nazareth have ended up in Loreto, Italy?