The one true sign in Matthew 24 is the Abomination of Desolation — referenced from Daniel 9

After the false signs (wars, famine, earthquakes, persecution), Jesus gives one specific sign: the abomination of desolation standing in the holy place (Matthew 24:15), with a parenthetical note to "let the reader understand" — pointing back to Daniel 9. Mike interprets this as an antichrist figure making a covenant with Israel, resuming temple sacrifices (requiring a rebuilt temple), then interrupting those sacrifices to declare himself god. When this occurs, the Great Tribulation begins and the Second Coming is imminent.