Matthew 24:34 (KJV)

Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:

And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.

And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.

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

So likewise ye, when ye shall see all these things, know that it is near, even at the doors.

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

But of that day and hour knoweth no man, no, not the angels of heaven, but my Father only.

But as the days of Noe were, so shall also the coming of the Son of man be.

For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark,

And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.