God chose to become man. And he chose to do so in Mary, and by Mary, and through Mary. God chose Mary, and Mary accepted the honor of being chosen, to share in the fruitfulness of God and bring forth His only Son, and then all the mystical body of Christ.
When Joseph or Mary told the child Jesus something, He listened to them. They stood in the place of God. Parents can make Saints by imitating Mary and Joseph and creating a virtuous household. They must keep out immodest clothes and all forms of materialism and luxury, employing prayer and penance. They must ban bad books, bad television, and bad magazines. Habitual prayer, especially as a family, is the most important thing for creating a virtuous Christian home.