What, exactly, is a prayer, in your theology, Mondo1? What does prayer mean? Is this requirement of invisibility one you made up to suit your dogma, or do you have some basis for insisting that prayer is only to things unseen?
I generally consider prayer to be a message that is spoken outwardly or inwardly to a deity not in your presence.
Revelation 1:9 and 22:8 do not denote a change in speaker. Nor does the text in any way indicate that as a function of the construct. That is what threw me off. You said the construction denoted a change in speaker in two other places. Upon examining the texts you cited, I realize you are mistaken.
No, I'm not. In Revelation 1:8 we have God speaking. John cuts in at verse 9. In Revelation 22:7 we have the angel speaking, John cuts in at verse 8.
In the case of Revelation 22, it also does not denote a change in speaker. It does denote something in all three cases, however. For this purpose it is not an uncommon construction at all. It denotes that the speaker personally affirms what follows, affixes his name to what is recorded, as a personal guarantor of the validity. (1 Corinthians 10:1; Galatians 5:2; Ephesians 3:1; Colossians 1:23; 1 Thessalonians 2:8; 2 Thessalonians 3:17; Philemon 19)
What on earth does the use of it within an epistle have to do with the use of it in this piece of apocalyptic literature? Nothing at all. I stand by what I said, for the evidence of the use within the book of Revelation is clear in that a speaker change is presented.
Mondo1: You mentioned that Jehovah is also coming quickly. But, once again, failed to give a reference. You can add Revelation 2:16 to the earlier list a gave, for a total of 5 occurrences of Jesus coming quickly versus the zero count of anyone else "coming quickly". Your assertion that verse 7 is the angel referring to itself as coming quickly is unfounded, since the angel is speaking for Jesus, the one who sent the angel.
Nothing suggests that the angel stopped speaking or that it is speaking "for Jesus." There is no reason that the angel could not say it, for the NT is clear in that Jesus will come with the angels. (Mat. 16:27) Further, the Bible also speaks of the Father coming. In fact, the very text in which Revelation 22:12 is sourced from does so, Isaiah 40:10, where the Messiah is seen in "the arm of Jehovah" (cf. Isa 53:1) ruling for the Jehovah that comes. This is also brought out in Daniel 7:22 and Luke 20:13-16.