I agree. God is eternal and changeless. Therefore (absolute/real)truth must be irrefutable. It bears the imprints of the source. The sum of 2+2 will never be 5. While i have a separate thread on truth decay, the massive assault on truth, the realities we see and hear is a direct assault on the nature of God Himself, as the Source of truth.
It's actually a step further than that but I do agree with you.
What I was hoping for is actually that some Atheist here (well there are barely anyway so I'll just say it) would bring up, "Hey wise-guy, how do you logically determine that Truth is God or that God is Truth? Can we not have God but still have Truth?"
The answer to that would be that we have to further extend our thought here because Truth itself, while important, is not the whole picture. Of course I am speaking from an Islamic perspective and this is written into our theology but any high-thinking philosophies (like that of Hinduism, Jewish philosophy, Christian philosophy) would all agree on this, even with slightly differing manifestations of said Logic.
Truth is one thing but we have not mentioned Reality, Truth and Reality. One things gleamed from one of the names of God in Islam (al-Haqq) is that logically, if Truth and Reality exists, then they can only be the same thing. Truth without Reality is not Truth, Reality without Truth is not Reality. The two words, even though we do apply them in the West to different associations, are in fact the same thing.
Now we run up to the same issue as I mentioned above, so I won't repeat that. The circumstantial cannot be Absolute.
Now if you've kind of followed there, we can assume that Truth and Reality are the same thing and they cannot be anything in the Universe because the Universe is completely circumstantial (what Buddhists term Sunyata - emptiness, and Pratityasamutpada - dependent arising, all things in the universe are cause and effect, therefore have no solid reality), so the Universe itself is not Truth or Reality.
Now when we question the nature of this circumstantial material world, we will find the problem that arises from a supposedly self-generated world (as in, the materialist wordview) in that things are both animate and empty. Things are inherently dualistic, a thing is one thing but not another, and even on the microscopic level we see it reflected in particles and atoms themselves (etc).
Basically to skip forward, for things to have duality requires a Unity for those dualities to exist.
Now if Reality and Truth exist, then they are that Unity. But that Unity cannot be a Nothing, it has to be a something but not a "Thing".
It comes back to the issue in physics (which itself is as ancient as you could ever comprehend) being that for a thing to 'be', it must have an observer. Things are not non-things and are not self-observed outside of that sentient bodies that populate just one planet. For things to be things, on the macrocosmic scale requires an observer. It requires something, of the most unchanging simplicity, something which contains and defines which is contained within itself, on some level.
Now we come down to the creator and creation dichotomy, which I won't draw out, but the universe contains trillions of reiterations of fractals and nature mirrors itself everywhere. The universe and corporeal nature (like plants, trees, leaves, etc) are all parallel to each other geometrically and in many other ways.
[In fact my own avatar on this forum in the present is from the "Mandelbrot Set", in which shows the supreme complexity yet simplicity of nature. That nature and the universe are very geometric and therefore mathematical.
Not to focus too heavily for this post but the Qur'an itself does make a point about the orbiting of planets, the sphere, it makes a point about how God is not found in the supernatural but rather the natural. This is not because there is no supernatural but rather that the natural itself, that Science in it's pure sense, IS the way to proving God, hence why God tells us to study nature in the Qur'an.
It's the idea that we have all that we need already in front of us yet we look for more than is required of us, we have what Buddhism calls a "monkey mind". Once we quiet it down and look around us, intellectually and rationally, we find God overflowing all around us.]
Now nature is precise and is very much a fractal, the Universe is largely unknown to us yet very simple in principle.
Going back to dualities and matter, for identity to occur we need a Unity. Now that Unity can't be a non-thing, nor can it be a physical thing. Without going into the whole ordeal over the 'problem of consciousness', it is quite clear that the identity of disparate-yet-proliferating 'things' requires such an observer. If we bring in the big-bang too, we see that what "all" is contained in requires an absolute intensity, an omnipresent intensity that must be equally present and transcendent. It cannot be separate from anything, nor can it be equal to anything, as everything is reliant on such an intensity.
This intensity we can see as synonymous with Truth, Reality and Unity now. Truth, Reality, Unity, Intensity are all THE Absolute and are infinitely unconditioned, infinitely sustaining all the Universe(s).
Basically, from there we can see that God is not 'this or that', God is the IT which is NOT "this or that'.
Of course, all of this is barely scraping the surface of this topic.