O Jerusalem, Jerusalem, you who kill the prophets and stone those sent to you, how often I have longed to gather your children together, as a hen gathers her chicks under her wings, but you were not willing…

And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come…

At that time the sign of the Son of Man will appear in the sky, and all the nations of the earth will mourn.  They will see the Son of Man coming on the clouds of the sky, with power and great glory…

Matthew 23:37, 24:14, 30