You described a dog's sort of obedience. I think the "unthinking"... or perhaps at least "unquestioning" part was implied.I didn't say we are supposed to UNTHINKINGLY obey. Sometimes, in spite of all our questioning and thinking (which I didn't denounce, by the way), we still can't understand God's perspective. He has a lot more information at hand than we do. He sees the entire picture - we only see a part.
My point - and I'll make it again, since you seem to have missed it the first go round - is that Abraham didn't have the luxury of all the information we now have about God's character. For instance, he knew nothing of God's plan for a Savior, for grace, for a once and forever sufficient sacrifice of atonement. God had not revealed to mankind at that point what He has revealed to us from our 21st century perspective. God hasn't changed - He continues to reveal more of His character as His plan unfolds.
From the luxury of my 21st century Christianity, I understand that God will not ask us to sacrifice our children on an altar. We have the Bible, and Jesus - two important elements of my faith that were unknown to Abraham.
I think all that's irrelevant, frankly. In order to know that God wouldn't actually want Isaac sacrificed, Abraham would have to know exactly two things:
- God is good
- murdering people is bad
Which of these points was beyond Abraham's understanding?