Cofty, I have no reason to doubt that Abraham intended to carry out whatever God asked of him... but also that he knew, in faith, that he would be walking back with his son Isaac... and that God would provide the sacrifice... even though he might not have known how God would accomplish such things.
It is right there in the writing. Hiding in plain sight... and something that men either overlook, or assume that Abraham was lying for Isaac's sake. But as I said, there is nothing to corroborate that.
Abraham spoke in faith from the truth that was within him.
Peace,
tammy