Breaking Open the Word by Fr. Jordan DeGuire OP. 
(From A Word of Hope by the Dominicans)

In today's Gospel Jesus talks about the end times, when heaven and earth will pass away. What is revealed is that we are not masters of the world or even of our own lives. God is. We are only stewards of our little corner of it. The Good News is that when this time comes, God will collect and protect his faithful. So don't worry, just tend to the little part of the world that God has given you to be steward over. The Master will handle the rest.

Based on Mark 13:24–32

Jesus said to his disciples, ‘But in those days, after that suffering,
the sun will be darkened,
   and the moon will not give its light,
and the stars will be falling from heaven,
   and the powers in the heavens will be shaken.
Then they will see “the Son of Man coming in clouds” with great power and glory. Then he will send out the angels, and gather his elect from the four winds, from the ends of the earth to the ends of heaven.

‘From the fig tree learn its lesson: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near. So also, when you see these things taking place, you know that he is near, at the very gates. Truly I tell you, this generation will not pass away until all these things have taken place. Heaven and earth will pass away, but my words will not pass away.

‘But about that day or hour no one knows, neither the angels in heaven, nor the Son, but only the Father.