It begins like this:
After this I heard what seemed to be the loud voice of a great multitude in heaven, crying out,
Salvation and glory and power belong to our God, 2 for his judgments are true and just;
His judgments are true and just.
If you read the chapter (and you should!) you'll discover that there's going to be an invitation to Supper. Actually, there'll be TWO suppers, and you'll be invited to one or the other. You're either attending the Marriage Supper of the Lamb, or The Great Supper of God. Both will be a feast for someone. Read Revelation 19 to find out what's on the menu.
Blessed are those who are invited to the marriage supper of the Lamb.
Then I saw an angel standing in the sun, and with a loud voice he called to all the birds that fly directly overhead, “Come, gather for the great supper of God, 18 to eat the flesh of kings, the flesh of captains, the flesh of mighty men, the flesh of horses and their riders, and the flesh of all men, both free and slave, both small and great.”Even if you die before the great and terrible day of the Lord, the message is the same: God's judgments are true and just. You are accountable to Him. You will one day stand before Him and give an account of your life, and you need to be thinking about that day.
Seek the Lord while He may be found.
If you seek Him, you will find Him, if you search for Him with all your heart.
What must I do to be saved? Believe on the Lord Jesus Christ and thou shalt be saved.
If you want to know more, go here to read good news: The Gospel in a Nutshell.