RE: The Sacrifice of Isaac story (and how it ties forward)
It’s important to remember that Abraham didn’t get up from having a cold beer fresh out of the refrigerator and watching the Dodgers game to take Isaac up to Mount Moriah and sacrifice him. This was his miracle child, the one who came after he and Sarah had given up all hope of children, his only son, the one that God had already prophesied would carry on his line. And ABRAHam was the product of a civilization that considered sacrifice to their gods, including human sacrifice, morally good. So at least two things are going on here:
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God is testing Abraham’s commitment to Him, to start with. Whatever God intends, Abraham at least thinks He means that he has to sacrifice his only son (never mind Ishmael, he’s by a concubine and didn’t get the promise) to Him. Abraham may well have been hoping that God intended to pull a rabbit from a hat, but he knew what his role was, and despite his anguish he was going to carry it out.
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God is teaching Abraham, “What kind of god do you think I am, anyway?” He brings across the message that He is righteous and loving by putting Abraham to the test and then saying, “Hey, child sacrifice is not My thing. Offer up this lamb here, instead. Write that down: I’m not like those other gods, I don’t demand human sacrifice.”
There’s also, for a Christian, a third, typological element here. What God demands of Abraham is exactly what He Himself will do 1900 years later: offer His only Son up as sacrifice, a substitutionary Lamb to atone for sin. While it’s purely coincidental, I’ve always been touched by the phrasing in the KJV of Abraham’s answer to Isaac: Isaac says, “Well, here we are, and here’s the altar, and here’s the knife, but where’s the lamb to sacrifice?” And Abraham responds, “My son, God will provide Himself a lamb for the sacrifice.” Indirect and direct objects, or direct object and phrase in apposition? You decide.