Matthew 24:31-35

And he will send out his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of heaven to the other. “From the fig tree learn its lesson: as soon as its branch becomes tender and puts out its leaves, you know that summer is near. So also, when you see all these things, you know that he is near, at the very gates. Truly, I say to you, this generation will not pass away until all these things take place. Heaven and earth will pass away, but my words will not pass away.