Revelation 22:18-21 covers the final section of the book of Revelation which I have titled "Faithful to the End." In this section we are working with the idea that We must adhere to the words of this book!

In vv. 18-19 learned about 1) The Prohibition of Christ.

Now, in v. 20a we see 2) The Promise of Christ.

Then, in v. 20b we see 3) The Prayer to Christ.

And finally, in v. 21, we learn of 4) The Present of Christ.