end of the world

noun

1.
(New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
crack of doom Day of Judgement Day of Judgment day of reckoning doomsday Doomsday eschaton Judgement Day Judgment Day Last Day Last Judgement Last Judgment
2.
an unpleasant or disastrous destiny
day of reckoning doom doomsday