Mark 13:30

Now learn a parable of the fig tree; When her branch is yet tender, and putteth forth leaves, ye know that summer is near:

So ye in like manner, when ye shall see these things come to pass, know that it is nigh, even at the doors.

Heaven and earth shall pass away: but my words shall not pass away.

But of that day and that hour knoweth no man, no, not the angels which are in heaven, neither the Son, but the Father.