@Glennn,
I wrote:Well, first of all, that's not the story.
Glennn wrote:Perhaps you would care to put the father's willingness to murder his son at the behest of a voice in his head into the proper context.
Sorry this took so long:
You have managed to pose the question that caused Kierkegaard to pass into infinite resignation. And, while I believe I can explain the account in accord with divine purpose, were I to have worn Abraham's sandals, I fear I might have failed.
First of all, consider the story according to the writer's perspective. Abraham was a contemporary of Shem, one of the flood survivors. The implication is that he would have learned much about God and his promises at the instruction of such a man. (Josephus identifies him as Melchizedek, BTW.) Abraham's faith was strong enough at age 75 to give up his comfortable life and wealty status in the city of Ur in order to live in tents. Apparently, he continued to prosper in spite of this sacrifice.
Before he left Ur, he was promised an heir that would fulfill the promise of Genesis 3:15 and whose offspring would become a great nation. At the time, Abraham was married to Sarah, but they were childless and both were old. So it would have taken great faith to obey. Time passed. In fact about 25 years went by before Abraham, then about 100 and Sarah, about 90, became parents to Isaac.
The supreme test of Abraham’s faith came about years later, when according to Jewish tradition,
Isaac was now 25 years old. (Jewish Antiquities, by F. Josephus, I, 227 [xiii, 2]) In obedience to God’s instructions Abraham took Isaac and traveled to Mount Moriah. There he built an altar and prepared to offer up Isaac, the promised seed, as a burnt sacrifice. Only at the last moment did God intervene and provide a ram as a substitute for Isaac. It was his implicit faith backed up by complete obedience that moved God to reinforce his covenant with Abraham with a sworn oath, a special legal guarantee.
Note that half a century passed between God's initial covenant with Abraham for the seed and the incident on Mount Moriah. Intervening events surely strengthened Abraham's faith that should Issac die, God could certainly bring him back in order to fulfill the promise. See Hebrews 11:19.
The analogy between this event and God's willing sacrifice of his firstborn should be here noted.