Before we can address the contradictions between divine omniscience and omnipotence, you need to define a divine entity. It is theists who attach such attributes to their various gods. For all the warm and fuzzy mystical attractiveness of such attributes, I cannot help but point out that a demonstration of your gods is in order before we can move your opinions from the realm of hopeful speculation to something deserving of more serious consideration.
Like most religionists, you have accepted then gods of convenience that are a part of your cultural backgtound and have made no effort to rationally reconcile the implications of the Christian concepts of the gods, and in particular the associated salvation scheme.
You repeatedly assert that your beliefs are “reasoned to,” but when we look at them we find only dogma and circular argument. AS theists do, you use the assumption that your gods are true to “prove” that the Bibles are true. You use the assumption that the authors of the bibles were infallible guides to “prove” that the authors were infallible guides. When you make the claim that your sources of knowledge are infallible, yet the only reason you believe that is because the sources themselves say so… well, you must admit, you are far a field from a serious argument.
There is little difference between the natural Big Bang paradigm and a Prime Mover Who Stays Completely Out of It paradigm. With the former you have causal "omnipotence" -- nothing is as all powerful as all of existence (i.e., gravity is likewise omnipotent). But that's all you have. No "omniscience" and no "omnibenvolence" or any of those extraneous human-ego attributes. So why opt for the latter, and then go assigning it characteristics that deconstruct the very thing you opt for?
An invisible, undetectable, unknown and completely and perfectly uninvolved entity is synonymous with "Nothingness". So why give this nothingness human attributes?
Back to reality. . . .
The first principles of ontology per the imperatives of logic tell us precisely why the universe began to exist from nothing, that the KCA is incontrovertible, and precisely what the fundamental attributes of divinity are. One need not appeal to the Bible. One need only think. From my summary of the conclusion of the KCA and as
ding argued in a series of posts, we have:
God is a wholly transcendent (spiritual), eternally self-subsistent being (Mind) of incomparable greatness and free will Who created everything else that exists from nothing. Such a being would necessarily be omnipotent and omniscient.
Now back to my question: why do you say that divine omnipotence and omniscience are contradictory, or that there is some contradiction between them?