That’s a very long “end time,” so long as to be meaningless.
Any Christian who can perform those “signs” should be proving it to skeptics like James Randi, to make millions of dollars and to give that money to the poor.
Mark ends at 16:8. The rest about the signs and whatnot was written much later by a different, catholicizing author.
But I agree we shouldn’t presume to be perfectly rational. Inspiration and insight are important in art. My article on miracles is set against the evidential apologists who pretend their religious faith is entirely supported by reason, whereas most of their religious beliefs are flagrantly irrational.