Behold, He is coming with clouds, and every eye will see Him, even they who pierced Him. And all the tribes of the earth will mourn because of Him. Even so, Amen.
A number of prophecies about the return of Jesus Christ mention that He will return through the clouds to again stand on this earth (Daniel 7:13; Matthew 24:30; Acts 1:9-11; 1 Thessalonians 4:17; Zechariah 14:4).
At first, much of humanity will be deceived into considering Jesus an invader to fight against (Revelation 19:19), but then they will realize that they have rebelled against our Savior and King. They will mourn for their sins that caused the death of the Messiah.