If I were Abraham I would've know it either WASN'T God or it was & He wanted me to deny this kind of behaviour !!!
I don't see how you can possibly be certain of that - we have no way of bridging the gap from our modern consciousness to the kind of consciousness that Abraham may have had*. Given the differences in outlook and belief of those who profess to "know God" or believe he communicates with them nowadays, your suggestion is even more unlikely.
However, all this ultimately hangs on a very old story, written by a number of ancient scribes. Maybe there was a real Abraham, and maybe he had such an experience - maybe not. Maybe the scribes were simply attempting to establish some sort of origins for monotheistic belief for the ancient Hebrews, and centred them on certain key figures like Abraham. Many religious interpreters down the ages have suggested that God was testing the extent of Abraham's faith and obedience, and this was a way of demonstrating it (with the implication that this kind of ordeal was morally legitimate). We have no way of knowing what the intentions of the original scribes were - but if this is what they intended to demonstrate, then I can't help thinking that they might have found a better way of going about it. But that's just my modern liberal consciousness again.
Here's a wanky intellectual title for you:
"The Origins of Consciousness in the Breakdown of the Bicameral Mind" by Julian Jaynes. Debatable theories, but an interesting take on the right brain - left brain phenomenon.
