Just as the First Coming of Christ was for salvation, the Second Coming of Christ is for judgment and damnation. Just as Christ came in humility and humiliation at His First Advent, He will come WITH POWER AND GREAT GLORY at His Second Advent (Mt 24:30).
There are many Christians who have failed to see this truth. Indeed there is much confusion about the Second Coming, with some even imagining that there is no difference between the Resurrection/Rapture and the Second Coming. Some even think that the Second Coming equals the end of the world. Some do not even believe that there will be a battle of Armageddon. Some do not believe that God will gather all Jews from around the world at that time so that they are confronted by their true Messiah in Israel, who will stand on the Mount of Olives and split it in two. Some do not believe that after His Second Coming, Christ will literally establish His literal reign on earth for one thousand years. And the list goes on. Utter confusion when there should be perfect clarity.
It is truly amazing to think that Enoch – the seventh from Adam (who lived on earth around 3400 BC) – prophesied about the Second Coming of Christ to execute judgment: And Enoch also, the seventh from Adam, prophesied of these, saying, Behold, the Lord cometh with ten thousands of His saints, To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against Him. (Jude 1:14, 15)
We see the Second Coming of Christ in Revelation 19:11-21. This is a literal, real, visible, tangible Second Coming with Christ returning to earth with all His saints and angels (called “clouds” because of their white and shining appearance): Behold, He cometh with clouds; and every eye shall see Him, and they also which pierced Him: and all kindreds of the earth shall wail because of Him. Even so, Amen. (Rev 1:7)
This verse tells us that (1) every person on earth will see the majestic Second Coming of Christ, and (2) every person – the whole unbelieving and ungodly world – will weep and wail and mourn because Christ is coming to judge them in His wrath.
This is further detailed in 2 Thessalonians 1: 6-10 and Revelation 6:15-17: Seeing it is a righteous thing with God to recompense tribulation to them that trouble you; And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels, In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ: Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of His power; When He shall come to be glorified in His saints, and to be admired in all them that believe (because our testimony among you was believed) in that day...
...And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains; And said to the mountains and rocks, Fall on us, and hide us from the face of Him that sitteth on the throne, and from the wrath of the Lamb: For the great day of his wrath is come; and who shall be able to stand?
In view of the certainty of the Second Coming of Christ, God has given a warning to every person on earth to repent. Indeed He has commanded ALL MEN EVERYWHERE to repent (Acts 17:30,31): And the times of this ignorance God winked at; but now commandeth all men every where to repent: Because He hath appointed a day, in the which He will judge the world in righteousness by that Man whom He hath ordained; whereof He hath given assurance unto all men, in that He hath raised Him [Christ] from the dead.