Thanks, Rob.
The Book of Jasher relates that Abraham suffered terribly over this order.
He had to resort to trickery in order to get Isaac to go with him, and he didn't tell Sarah anything about it!
Let no one think that keeping the faith is easy!
We have had a similar discussion in our temple Torah study. We have also discussed that Isaac may have been really messed up psychologically from the event-- if it did happen. Truth is, we do not know. Most of us prefer to try to find different conclusions. With Jews, the important thing is to study and reflect upon the Torah in an effort to better understand God who is unknowable. Futility? You betcha, but it is stimulating too.