Isaiah 64:1-9 New Revised Standard Version (NRSV)
64 O that you would tear open the heavens and come down,
1 Corinthians 1:3-9 New Revised Standard Version (NRSV)
3 Grace to you and peace from God our Father and the Lord Jesus Christ.
4 I give thanks to my[a] God always for you because of the grace of God that has been given you in Christ Jesus, 5 for in every way you have been enriched in him, in speech and knowledge of every kind— 6 just as the testimony of[b] Christ has been strengthened among you— 7 so that you are not lacking in any spiritual gift as you wait for the revealing of our Lord Jesus Christ. 8 He will also strengthen you to the end, so that you may be blameless on the day of our Lord Jesus Christ. 9 God is faithful; by him you were called into the fellowship of his Son, Jesus Christ our Lord.
Mark 13:24-37 New Revised Standard Version (NRSV)
The Coming of the Son of Man
24 “But in those days, after that suffering,
the sun will be darkened,
26 Then they will see ‘the Son of Man coming in clouds’ with great power and glory. 27 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.
The Lesson of the Fig Tree
28 “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. 29 So also, when you see these things taking place, you know that he[a] is near, at the very gates. 30 Truly I tell you, this generation will not pass away until all these things have taken place. 31 Heaven and earth will pass away, but my words will not pass away.
The Necessity for Watchfulness
32 “But about that day or hour no one knows, neither the angels in heaven, nor the Son, but only the Father. 33 Beware, keep alert;[b] for you do not know when the time will come. 34 It is like a man going on a journey, when he leaves home and puts his slaves in charge, each with his work, and commands the doorkeeper to be on the watch. 35 Therefore, keep awake—for you do not know when the master of the house will come, in the evening, or at midnight, or at cockcrow, or at dawn, 36 or else he may find you asleep when he comes suddenly. 37 And what I say to you I say to all: Keep awake.”