That's complete nonsense. "God is beyond our conceptions of good and evil" doesn't make any sense, not in Christianity at the very least. Have you ever heard of a dogma named "The Univocity Of Being"? It's a well established Christian theological dogma stating that properties that can apply to "earthly" beings can apply to God as well. So that means that God would be "good" in the exact same sense as a human being is "good". So no, "God" is not beyond our judgment or comprehension. Also, God is explicitly described as being omnibenevolent in literally every piece of scripture. How do you reconcile that with the existence of suffering in the world? And before you take the position of Augustine and suggest it, no, free will doesn't exist, there's a reason only 14% of philosophers support the notion of free will. And even if free will did exist, which it doesn't, then it would be inherently invalidated, as God would, by definition (as he is supposedly omniscient) have knowledge of the future, and this is without even getting into the philosophy of time.
Simply put:
P1a. God exists.
P1b. God is omnipotent, omnibenevolent and omniscient.
P1c. An omnipotent being has the power to prevent that evil from coming into existence.
P1d. An omnibenevolent being would want to prevent all evils.
P1e. An omniscient being knows every way in which evils can come into existence, and knows every way in which those evils could be prevented.
P1f. A being who knows every way in which an evil can come into existence, who is able to prevent that evil from coming into existence, and who wants to do so, would prevent the existence of that evil.
P1. If there exists an omnipotent, omnibenevolent and omniscient God, then no evil exists.
P2. Evil exists (logical contradiction).
P3. An omnipotent, omnibenevolent, and omniscient God does not exist.