Apostasy:  The abandonment or renunciation of one's religious beliefs, often associated with a period of widespread spiritual decline in End Times.

Antichrist:  An evil figure, possessed by Satan, who is prophesied to rule over the whole world in the days before the Second Coming of Christ..

Apocalypse:  A prophetic revelation, often related to End Times events.

Armageddon:  A climactic battle or confrontation between good and evil at the end of the world, as mentioned in Revelation 16:16.

Beasts:  Symbolic figures usually representing the various governments or kingdoms that will rule over the earth during various times in history.

Dispensationalism:  A theological framework that divides history into distinct periods or "dispensations," often used to interpret End Times events.

Eschatology:  The branch of theology that deals with the final events of human history, such as death, judgment, and the afterlife.

Four Horsemen of the Apocalypse:  Four symbolic horsemen described as causing conquest, war, famine, and death, found in the first four Seal Judgments of Revelation 6.

Gog and Magog:   Nations or forces prophesied to oppose God's people in the End Times.

Great White Throne Judgment:   The final judgment by God in which books are opened containing the records of everyone’s deeds -- whether they are good or evil -- and God will reward or punish each one accordingly.

Millennium:  A thousand-year period of peace and righteousness when Christ will rule the world following the Tribulation.

Parousia:  The Greek term for the Second Coming of Christ, which is made up of a series of events.

Preterism:  A theological view that many End Times prophecies were fulfilled in the past, rather than being future events.

Rapture:  The prophesied event when true believers will be taken to heaven by God in a "twinkling of an eye"..

Resurrection: The raising of the dead, a key element of many End Times scenarios.

Seals, Trumpets, and Bowls:  Three series of seven judgments and calamities described in the Book of Revelation.

Second Coming:  The return of Jesus Christ to Earth.

Tribulation:  A period of intense suffering and turmoil prophesied to occur before the Second Coming of Christ.