Mark 13:30-34

Verily I say unto you, that this generation shall not pass, till all these things be done.

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.

Take ye heed, watch and pray: for ye know not when the time is.

For the Son of man is as a man taking a far journey, who left his house, and gave authority to his servants, and to every man his work, and commanded the porter to watch.