God wants to great things for us but we resist. This is often the case of people in general. We have an inborn hunger and desire for God, and yet we seem to be afraid of assuming the responsibility of receiving him into our lives.
Mary, the virgin, was quite different. Without hesitation, Mary consented to becoming the mother of Jesus, by saying: I am the handmaid of the Lord. Let it be done to me as you say. Apart from Jesus, Marys life and example makes her one of the greatest preacher and spiritual director the world has ever known. The lesson of her life is the only lesson that is essential for us. When God wishes to give himself to us, when he wishes to do something marvelous for us, we must not refuse as Ahaz did. Rather, like Mary, we must open our minds, hearts and lives to him. Only then will he come and make himself at home with us. It is as simple as that. This is basic Christianity.