The God of Abraham and God in Mary
Abraham is the father of all believers. There was a closed cockpit door between God and Abraham behind which God spoke, and Abraham believed, trusted and did everything God told him to do.
Abraham did not live to see or experience the promise God made to him.
He was prepared to stand at the altar of sacrifice using will and logic to reason that were he to give up Isaac, God could bring his son back to life. Yet he was thankful, even relieved, with the lamb God provided.
This closed door; the veil of Moses and the inner sanctuary, which only the