Luke 24:13-35

Now that very day two of them were going to a village seven miles from Jerusalem called Emmaus, and they were conversing about all the things that had occurred. And it happened that while they were conversing and debating, Jesus himself drew near and walked with them, but their eyes were prevented from recognizing him. He asked them, “What are you discussing as you walk along?” They stopped, looking downcast. One of them, named Cleopas, said to him in reply, “Are you the only visitor to Jerusalem who does not know of the things that have taken place there in these days?" And he replied to them, “What sort of things?” They said to him, “The things that happened to Jesus the Nazarene, who was a prophet mighty in deed and word before God and all the people, how our chief priests and rulers both handed him over to a sentence of death and crucified him. But we were hoping that he would be the one to redeem Israel; and besides all this, it is now the third day since this took place. Some women from our group, however, have astounded us: they were at the tomb early in the morning and did not find his body; they came back and reported that they had indeed seen a vision of angels who announced that he was alive. Then some of those with us went to the tomb and found things just as the women had described, but him they did not see.” And he said to them, “Oh, how foolish you are! How slow of heart to believe all that the prophets spoke! Was it not necessary that the Messiah should suffer these things and enter into his glory?” Then beginning with Moses and all the prophets, he interpreted to them what referred to him in all the scriptures. As they approached the village to which they were going, he gave the impression that he was going on farther. But they urged him, “Stay with us, for it is nearly evening and the day is almost over.” So he went in to stay with them. And it happened that, while he was with them at table, he took bread, said the blessing, broke it, and gave it to them. With that their eyes were opened and they recognized him, but he vanished from their sight. Then they said to each other, “Were not our hearts burning [within us] while he spoke to us on the way and opened the scriptures to us?” So they set out at once and returned to Jerusalem where they found gathered together the eleven and those with them who were saying, “The Lord has truly been raised and has appeared to Simon!” Then the two recounted what had taken place on the way and how he was made known to them in the breaking of the bread.

The Immaculate Conception of the Blessed Virgin Mary was solemnly defined in 1854 by Pope Pius IX in Ineffabilis Deus, stating that Mary was conceived without the stain of original sin. The modern standards for the artistic depiction of this concept were established in the mid-17th Century, featuring Mary wearing mostly white, with some small element of blue; It is worth noting that when Mary appeared to St. Bernadette Soubirous at Lourdes in 1858 (the Marian apparition known today as Our Lady of Lourdes), it was while garbed in this fashion that the Virgin identified herself as "the Immaculate Conception", some 200 years after artists had standardized the depiction. The additional imagery in this window, of the Virgin trodding upon the serpent's head is derived from Genesis 3:15.

Genesis 22:2-18

Then God said: Take your son Isaac, your only one, whom you love, and go to the land of Moriah. There offer him up as a burnt offering on one of the heights that I will point out to you. Early the next morning Abraham saddled his donkey, took with him two of his servants and his son Isaac, and after cutting the wood for the burnt offering, set out for the place of which God had told him.

On the third day Abraham caught sight of the place from a distance. Abraham said to his servants: “Stay here with the donkey, while the boy and I go on over there. We will worship and then come back to you.” So Abraham took the wood for the burnt offering and laid it on his son Isaac, while he himself carried the fire and the knife. As the two walked on together, Isaac spoke to his father Abraham. “Father!” he said. “Here I am,” he replied. Isaac continued, “Here are the fire and the wood, but where is the sheep for the burnt offering?” “My son,” Abraham answered, “God will provide the sheep for the burnt offering.” Then the two walked on together.

When they came to the place of which God had told him, Abraham built an altar there and arranged the wood on it. Next he bound his son Isaac, and put him on top of the wood on the altar. Then Abraham reached out and took the knife to slaughter his son. But the angel of the Lord called to him from heaven, “Abraham, Abraham!” “Here I am,” he answered. “Do not lay your hand on the boy,” said the angel. “Do not do the least thing to him. For now I know that you fear God, since you did not withhold from me your son, your only one.” Abraham looked up and saw a single ram caught by its horns in the thicket. So Abraham went and took the ram and offered it up as a burnt offering in place of his son. Abraham named that place Yahweh-yireh; hence people today say, “On the mountain the Lord will provide.”

A second time the angel of the Lord called to Abraham from heaven and said: “I swear by my very self—oracle of the Lord—that because you acted as you did in not withholding from me your son, your only one, I will bless you and make your descendants as countless as the stars of the sky and the sands of the seashore; your descendants will take possession of the gates of their enemies, and in your descendants all the nations of the earth will find blessing, because you obeyed my command.”