It sounds unbelievable, but it is true.
I know it is true because the bible says so.
Luke 17 vs. 21: “Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you.”
Therefor: god did not exists before man existed and he will also not exist after man has seized to exist.
Of course Jesus was all-knowing and he knew that man only evolved recently an he also knew that man will not live forever - therefor he knew that god did not really exist - or better still… he knew that god was created by man.