Rescuing Revelation - Coda

The Rescuing Revelation road comes to an end. The relevance and practically of the whole book is often hidden by inappropriate and misguided interpretations, and our intention was to, at least, address some of these. From Chapter 22 verse 6, the vision forms a 'coda' to the finale of the book with an 'alter call' or invitation by the exalted Jesus. What is this invitation and what does it really mean to 'keep the words' contained within the vision?