The root difficulty here is an all too human one; it can be expressed by the question,
**What makes something what it is? **
That is,
**What makes it what is and not something else? **
Almighty God, being an invisible Spirit, is even more difficult to speak of than the ordinary things of daily life which fall under our senses, and even properly describing and differentiating between them can be a challenge.
Take, for example, the common couch. My couch in the Western world varies greatly in so many respects, such as size, weight, shape and the like; but I can always recognize it. Nonetheless, in other parts of the world, that couch might be of such a different design and shape that I could hardly fathom recognizing or describing it as a couch. Such a situation, at least, is a potential reality; nonetheless, the couch’s essence, in this case, is still a couch; however, also possible is a situation where something else that is being called a couch is, in fact, not actually a couch. Let us say that this object is, in fact, a bed and some salesman is trying to sell it to some poor, ignorant (and imaginary) peasants as being a luxury “couch”. If we were present, we would cry foul and object, though the salesman might be a sophist and try to convince us that the bed is, indeed, actually a couch. So he says that it is possible to lay down on both things, and that people do indeed lay down on both; that both things are comfortable and people are known to watch TV whilst laying in either. He continues on like this. Now this will either obsfucate us if we lack fortitude, or else increase our just ire.
So we see that the question boils down to,
**What is it? **
And,
Is it the same thing?
Is our Lord and Saviour equivalent and, therefore, synonymous with the Muslim’s Allah? Or is He only like his Allah? If synonymous or equivalent, then we are engaging in semanctics by arguing about it; if, however, there exists only a likeness or resemblance, but a substantial difference, then indeed we are recognizing two different things that cannot be made absolutely equivocal. In the latter case we would, in fact, be imagining a phantasm.