The book of Revelation opens with...

1This is a revelation from Jesus Christ, which God gave him to show his servants the events that must soon take place. He sent an angel to present this revelation to his servant John, 2who faithfully reported everything he saw. This is his report of the word of God and the testimony of Jesus Christ.

3God blesses the one who reads the words of this prophecy to the church, and he blesses all who listen to its message and obey what it says, for the time is near.

And concludes with...

20He who is the faithful witness to all these things says, “Yes, I am coming soon!”

Amen! Come, Lord Jesus!

21May the grace of the Lord Jesus be with God’s holy people.

It's Christ's final word to mankind and His promise to return. Yes, it will be unpleasant... but absolutely necessary. That's God's TOUGH love folks, don't kill the messenger.