Language depicting the sudden appearing of Christ, at a time when ‘no one knows the day or hour’ refers to Christ’s return for His Bride. It is sudden and the Bride must be alert and ready.
Language referring to the Lord coming in Judgment, setting foot upon the Mount of Olives, refers to His return as King of Kings and Lord of Lords. This is commonly called ‘The Second Coming. The Second Coming will be known. It will occur 1290 days after the Abomination of Desolation when the Anti-Christ defiles the temple and sets himself up to be worshipped as God. In fact, The Battle of Armageddon’ is where the Anti-Christ specifically seeks to STOP Jesus’ return as King of Kings and Lord of Lords. This happens because the exact day of Christ’s return to Earth will be known from prophecy.
Simply stated: No one knows the day or hour of the coming of the Bridegroom for His Bride; but all the world will know and see Jesus coming in Glory at His Second Coming! The countdown doesn’t commence until Great Tribulation starts, and that will commence with the Anti-Christ being revealed by setting in place a seven year peace treaty with Israel. This revelation of the Lawless One will not occur until He who restrains is removed. 2 Thess. 2:7. This is accepted to be the Holy Spirit! Jesus promises all believers, (Matt. 28:20) “I will be with you always, even unto the end of the age.” When Jesus comes for the Bride, that is the end of the Age! The end of the Age of Grace; the end of the church age. The Holy Spirit leaves with the Bride and Groom and the Lawless One is revealed.