Apocalyptical

of or like an ; affording a revelation or prophecy.
pertaining to the or biblical book of revelation.
predicting or presaging imminent disaster and total or universal destruction:
the apocalyptic vision of some contemporary writers.
historical examples

hildegarde replied in an obscure, apocalyptical language: “in the mysteries of the true wisdom have i seen and heard this.”
the evolution of love emil lucka

doubtless these are only a few of the great number of apocalyptical books which those ages produced.
who wrote the bible? washington gladden

and the case is precisely similar when an inspired writer uses a peculiar form of literature like the apocalyptical writings.
who wrote the bible? washington gladden

all this wild guessing arises from ignorance of the essential character and purpose of the apocalyptical writings.
who wrote the bible? washington gladden

when seen in the guise of the four apocalyptical animals, they belong to a later period.
blackwood’s edinburgh magazine – volume 62, no. 384, october 1847 various

adjective
outstanding in revelation, prophecy, or significance
of or like an apocalypse
adj.

1660s, “pertaining to the ‘revelation of st. john’ in the new testament,” from greek apokalyptikos, from apokalyptein (see apocalypse). meaning “pertaining to the imminent end of the world” evolved by 1880s.