NET

4 From John, to the seven churches that are in the province of Asia: Grace and peace to you from “he who is,” and who was, and who is still to come, and from the seven spirits who are before his throne,

Darby

John's Greeting to the Seven Churches

4 John to the seven assemblies which [are] in Asia: Grace to you and peace from [him] who is, and who was, and who is to come^D9436; and from the seven Spirits which [are] before his throne;

Darby Bible Notes

come - It is not 'about to come,' for the act of the Lord's coming is not immediately before the mind. I will not say there is no allusion to the future awaited exercise of divine power; for in Daniel, not only is the Son of man brought before the Ancient of days, but the Ancient of days comes. In the words 'who is, and was, and is to come,' there is surely reference to the abiding nature of his being. 'Who is to come' seems to me thus to render more truly the sense than any other form of words. The Greek has the future sense. See Mark 10.30, Luke 18.30; and Mark 11.10 partly runs into this sense. 'The coming one' became a name of the expected Messiah, as in Matt. 11.3, and in Heb. 10.37. But note, 'essential being' is put first, 'who is;' and then 'time past, and to come.' 'Who is' asserts the essential nature of his being.

KJV

John's Greeting to the Seven Churches

4 John to the seven churches which are in Asia: Grace [be] unto you, and peace, from him which is, and which was, and which is to come; and from the seven Spirits which are before his throne;