if he did not spare the ancient world but kept Noah, the herald of righteousness, safe with seven others, when he let loose the deluge on the world of impious men:
It was by faith that Noah, after being told by God what was still unseen, reverently constructed an ark to save his household; thus he condemned the world and became heir of the righteousness that follows faith.
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?"
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.