Heaven and earth will pass away, but my words will not pass away.
Amen, I say to you, this generation will not pass away until all these things have taken place. In the same way, when you see these things happening, know that he is near, at the gates. When its branch becomes tender and sprouts leaves, you know that summer is near. 'And then they will see 'the Son of Man coming in the clouds' with great power and glory, and then he will send out the angels and gather his elect from the four winds, from the end of the earth to the end of the sky. Jesus said to his disciples: 'In those days after that tribulation the sun will be darkened, and the moon will not give its light, and the stars will be falling from the sky, and the powers in the heavens will be shaken. Mark 13:24-32 (Jesus talks about the tribulation) - the Gospel Reading for the 33rd Sunday in Ordinary Time - Year B
