Then the Sign of the Son of man will appear in heaven; then all tribes on earth will wail, they will see the Son of man coming on the clouds of heaven with great power and glory.
Lo, he is coming on the clouds, to be seen by every eye, even by those who impaled him, and all the tribes of earth will wail because of him: even so, Amen.
who said, "Men of Galilee, why do you stand looking up to heaven? This Jesus who has been taken from you into heaven will come back, just as you have seen him depart to heaven."
Jesus said to him, "Even so! But I tell you, in future you will all see the Son of man seated at the right hand of the Power, and coming on the clouds of heaven."
So as he sat on the Hill of Olives the disciples came up to him in private and said, "Tell us, when will this happen? What will be the sign of your arrival and of the end of the world?"