On this memorial of The Immaculate Heart of Mary, we remember Mary as having the perfect human heart, untouched by sin. In iconography, Mary's Immaculate Heart is pictured in flames, recalling the burning bush that Moses encountered on Mount Horeb from which God spoke of his desire to save humanity. Mary's heart was grafted on to God's heart when she said agreed to become the Mother of God. Even though we see in the Gospel that Mary did not always understand the plan of God, her burning love never wavered.
Based on Exodus 3:1-6 and Luke 2:41-51
Exodus 3:1-6
Moses was keeping the flock of his father-in-law Jethro, the priest of Midian; he led his flock beyond the wilderness, and came to Horeb, the mountain of God. There the angel of the Lord appeared to him in a flame of fire out of a bush; he looked, and the bush was blazing, yet it was not consumed. Then Moses said, ‘I must turn aside and look at this great sight, and see why the bush is not burned up.’ When the Lord saw that he had turned aside to see, God called to him out of the bush, ‘Moses, Moses!’ And he said, ‘Here I am.’ Then he said, ‘Come no closer! Remove the sandals from your feet, for the place on which you are standing is holy ground.’ He said further, ‘I am the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob.’ And Moses hid his face, for he was afraid to look at God.
Luke 2:41-51
Now every year the parents of Jesus went to Jerusalem for the festival of the Passover. And when he was twelve years old, they went up as usual for the festival. When the festival was ended and they started to return, the boy Jesus stayed behind in Jerusalem, but his parents did not know it. Assuming that he was in the group of travellers, they went a day’s journey. Then they started to look for him among their relatives and friends. When they did not find him, they returned to Jerusalem to search for him. After three days they found him in the temple, sitting among the teachers, listening to them and asking them questions. And all who heard him were amazed at his understanding and his answers. When his parents saw him they were astonished; and his mother said to him, ‘Child, why have you treated us like this? Look, your father and I have been searching for you in great anxiety.’ He said to them, ‘Why were you searching for me? Did you not know that I must be in my Father’s house?’ But they did not understand what he said to them. Then he went down with them and came to Nazareth, and was obedient to them. His mother treasured all these things in her heart.
(New Revised Standard Version Bible: Anglicized Edition, copyright © 1989, 1995 National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved worldwide. http://nrsvbibles.org)