Grace and Peace
“At thy right hand there are pleasures for evermore” (Ps. 16:11)
“Write the things which thou hast seen, and the things which are, and the things which shall be hereafter” (Rev. 1:19).
John is then instructed to write down what he has seen. The book of Revelation has many “time stamps” 
within it, but it also has some time hints, like this one. John is told to write what he has seen, the things that are happening in the present, and the things that will occur after that, in the future. He is not told to write down what has happened, what is happening right then, and then to hit the pause button for two thousand years or more. The expectation clearly is that the “things hereafter” are the things that will be unfolding in the immediate future.
This is supported by the time stamps that occur elsewhere in the book. Two thousand years ago, the things described in this book were going to happen soon (Rev. 1:1). The Lord was coming soon (Rev. 3:1). The Christians of that era were warned about what must soon take place (Rev. 22:6). The Lord was indeed going to come and fulfill His words soon (Rev. 22:7, 12, 20).
This same reality is assumed in this passage. Write down what you have seen, what you are seeing, and what you will see (right after this).
