Q:
 Is the truth about reality  knowable?

A:
    Yes,

The truth about reality is knowable

The definition of truth cannot be denied without using it--for any denial of it claims to be true, that is to correspond to reality.

We can know actual reality,  this is undeniable

a. It is self-defeating to claim "we cannot know reality."  such a statement implies we really do know something about reality.

b.  Likewise, it is self-defeating to claim that we cannot know truth.  That statement itself claims to be true.

Therefore, we can know truth about reality Including truths about God

The opposite of true is false this is undeniable

The law of non-contradiction affirms opposites cannot both be true

This law of non-contradiction is undeniable.  Even those who deny it use it.

For Sure-Fire Way to Convince a Skeptic!

“Anyone who denies the law of non-contradiction should be beaten and burned until he admits that to be beaten is not the same as not to be beaten, and to be burned is not the same as not to be burned.”  (Avicenna, Great Medieval Philosopher)