Revelation 13:5-6

 "And behold, I am coming quickly. 

Blessed is he who heeds the words of the prophecy of this book."     

Revelation 22:7  NASB

The beast was given a mouth to utter proud words and blasphemies and to exercise authority for forty-two months. It opened its mouth to blaspheme God, and to slander his name and his dwelling place and those who live in heaven. 

The beast was given a mouth to utter proud words and blasphemies 
Daniel 7:8  "While I was thinking about the horns, there before me was another horn, a little one, which came up among them; and three of the first horns were uprooted before it. This horn had eyes like the eyes of a human being and a mouth that spoke boastfully."
Daniel 7:11  "Then I continued to watch because of the boastful words the horn was speaking. I kept looking until the beast was slain and its body destroyed and thrown into the blazing fire."
Daniel 7:20  "I also wanted to know about the ten horns on its head and about the other horn that came up, before which three of them fell--the horn that looked more imposing than the others and that had eyes and a mouth that spoke boastfully."
Daniel 7:25  " 'He will speak against the Most High and oppress his holy people and try to change the set times and the laws. The holy people will be delivered into his hands for a time, times and half a time.' " (forty-two months)
Daniel 11:36  "The king will do as he pleases. He will exalt and magnify himself above every god and will say unheard-of things against the God of gods. He will be successful until the time of wrath is completed, for what has been determined must take place."
2 Thessalonians 2:3-4  Don't let anyone deceive you in any way, for that day will not come until the rebellion occurs and the man of lawlessness is revealed, the man doomed to destruction. He will oppose and exalt himself over everything that is called God or is worshiped, so that he sets himself up in God's temple, proclaiming himself to be God. 

and to exercise its authority for forty-two months 
Revelation 11:2  "But exclude the outer court; do not measure it, because it has been given to the Gentiles. They will trample on the the holy city for 42 months."

It opened its mouth to blaspheme God, and to slander his name and his dwelling place and those who live in heaven 
Revelation 12:12  "Therefore rejoice, you heavens and you who dwell in them! But woe to the earth and the sea, because the devil has gone down to you! He is filled with fury, because he knows that his time is short."

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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