Actual infinite is an impossibility. *Hilbert Hotel Paradox (mathematical proof).
Potential infinite has an end point, though it could be vastly and unimaginably large.
Let's say, if Paul has eternal (infinite) lifespan in heaven, then god will not have omniscient knowledge for all of Paul's life because the infinite lifespan has no boundary and no limit and god's knowledge for trying to reach to near the end of the endless point would still be no nearer to the "near endpoint" even if that takes forever.
However, if Paul's lifespan is a potential infinite (not eternal), then that defines a boundary, and all knowledge of Paul's life would be contained within and could be known.
**there's a flaw in the cosmological argument: though universe is finite, the matter/energy of the universe exists and always existed (law of conservation of energy). To put the premise that god always existed, why not matter/energy always existed? Using Occam's Razor, it would then be better to not introduce another variable (of god)! Moreover, if god is taken as First Cause, that is a special pleading that god should be exempted from any cause. Why not apply the special pleading case to tooth fairy, Tao, or Buddha?
***Lol, that link is misleading. Food industry use pasteurisation - destroying microbial organisms - to preserve food.
Certain subjects under exploration like QM and False Vacuum are still in its infancy, though these might puzzle some as to why 'something may arise out of nothing'. Just as it is hypothesised that an ounce of False Vaccum should be sufficient to create a whole universe. QM's theory on black hole singularity that 'our universe may end just abruptly into nothing, or that the origin of something/universe may be started from origin that could not be traced' is something that puzzled Stephen Hawking himself, that he was hesitant on whether Big Bang was the start of the universe!