God made a Covenant with us through the person of Abraham. Trough this act, Abraham became our father in Faith. We see Abraham holding a knife. He is ready to sacrifice his only son Isaac, who was born by Abrahms’ wife, Sarah. God tested Abraham’s obedience with this request, but spared Isaac’s life. Abraham was told to sacrifice the ram which was caught tin the briers instead. The ram appears in the lower righthand side of the window.
The Testing of Abraham.
Some time afterward, God put Abraham to the test and said to him: Abraham! “Here I am!” he replied. 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.