Let's provide a consistent proof here.

>Universe cannot be infinite or eternal due to the infinite regression fallacy and going to prove this by contradiction:

-> Assume an eternal universe. Infinitude implies no beginning and no end.
-> Past is now up to infinity, with no beginning and no end.
->Present Implies the end of Past. Past now has an end.
-> It's logically contradictory to has an infinite past, as infinitude implied endlessness.

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Now that we proven that the Universe is not eternal.

--> The set of all rational possibilities for existence is (A logically impossible existence (a Squared circle), A logically possible existence (You, me, anybody), A logically Must existence.

--> Pleading to Causality (intuition and logic), everything that has a beginning has a cause.

--> Universe has a beginning (see the previous proof).

--> Universe has a cause.

--> Universe is contingent, meaning that it may or may have not been to existence.

--> Each contingent event (emerged event that needs a cause) is contingent, set of all contingencies are also contingent.

--> The existence of all conjunction of contingency implies a Necessary cause.

--> As infinite regression fallacy implies a first Necessary cause to have happen or else infinitude will imply we will have never reached this universal point. (Think of a soldier taking order from the upper rank to shoot someone, and the upper ranks takes it from the upper rank to infinity, the soldier will never shoot anyone).

--> Infinite regressions fallacy concludes that their MUST be a necessary cause which is not caused.

--> Since everything that has a beginning must have a cause, Things that is not caused have no beginning.

--> The Necessary existence is infinite (no beginning).

--> The Necessary existence is infinite, but the universe is not, therefore the existence itself didn't cause the universe, if it was the main cause, the universe would be infinite itself.

--> Therefore Necessary existence is willful, to have caused the universe at some point.

-->Therefore Necessary existence is omnipotent in that it will be able to create ALL of the contingencies but will not be able to create any illogically irrationally impossible contingency.

--> As the Necessary existence is infinite, it cannot exist withing the universe.

Therefore, there exist a necessary willful, omnipotent being.