10. Us. Textual evidence attests (cf. p. 10) the reading “them,” with reference to the redeemed of v. 9. The reading “us” was probably taken by the KJV translators from the Latin Vulgate. It is thus evident that in v. 10 the ones speaking do not specifically include themselves as “kings and priests.” It is not impossible, however, that they may be speaking of themselves in the third person, but this is not the natural conclusion to which the reading of the ancient manuscripts points. According to the preferred reading vs. 9, 10 may be translated as follows: “Thou art worthy to take the book and to open its seals, because thou wast slain and didst purchase to God by thy blood out of every tribe and tongue and people and nation, and didst make them to our God a kingdom and priests, and they shall reign upon the earth” (see below under “kings” and “we shall reign”). The kingdom is doubtless the spiritual kingdom of grace (see on Matt. 4:17; 5:3; Rev. 1:6).

Kings. Textual evidence favors (cf. p. 10) the reading “a kingdom” (see on ch. 1:6).

We shall reign. Textual evidence attests (cf. p. 10) the reading “they shall reign” (see above under “us”).

I've found a passage in which EGW refers to the "sons of God" of Job 1 as angels:

The Scriptures declare that upon one occasion, when the angels of God came to present themselves before the Lord, Satan came also among them (Job 1:6), not to bow before the Eternal King, but to further his own malicious designs against the righteous. With the same object he is in attendance when men assemble for the worship of God. {DD 5.4}

So, can we infer that the angels, at least some of them, are required to present themselves before the Lord and are not always before the Lord?

Is there anything that other created non-angel beings could be referred to as angels? Ellen White refers to the unfallen. But could she also include them with angels?

I find it improbable that the inhabitants of other worlds would be referred to as "angels," but I will not take a radical position on this.

The Four and Twenty Elders.-- Who are these beings who surround the throne of glory? It will be observed that they are clothed in white raiment and have on their heads crowns of gold, which are tokens of both a conflict completed and a victory gained. From this we conclude that they were once participants in the Christian warfare, they once trod the earthly way with all saints; but they have been overcomers, and in advance of the great multitude of the redeemed, are wearing their victor crowns in the heavenly world. Indeed, they plainly tell us this in the song of praise which they ascribe to the Lamb: "They sung a new song, saying, Thou are worthy to take the book, and to open the seals thereof: for Thou wast slain, and hast redeemed us to God by Thy blood out of every kindred, and tongue, and people, and nation." Rev_5:9. This song is sung before any of the events in the prophecy of the seven seals take place; for it is sung to set forth the worthiness of the Lamb to take the book and to open the seals, on the ground of what He had already accomplished--their redemption. It is not therefore thrown in here by anticipation, having its application in the future, but it expresses an absolute and finished fact in the history of those who sang it. These, then, were a class of redeemed persons--redeemed from this earth, redeemed as all others must be redeemed, by the precious blood of Christ.

Do we in any other place read of such a class of redeemed ones? We think Paul refers to the same company when he writes to the Ephesians thus: "Wherefore He saith, When He [Christ] ascended up on high, He led captivity captive, and gave gifts unto men." The marginal reading is He led a "multitude of captives." Eph_4:8. Going back to the events that occurred in connection with the crucifixion and the resurrection of Christ, we read: "The graves were opened; and many bodies of the saints which slept arose, and came out of the graves after His resurrection, and went into the holy city, and appeared unto many." Mat_27:52-53. Thus the answer to our question comes unmistakably from the sacred page. These are some of those who came out of their graves at the resurrection of Christ, and who were numbered with the illustrious multitude which Jesus led up from the captivity of Death's dark domain when He ascended in triumph on high. Matthew records their resurrection, Paul their ascension, and John beholds them in heaven, performing the sacred duties which they were raised up to accomplish.

In this view we are not alone. John Wesley spoke as follows concerning the four and twenty elders: " 'Clothed in white raiment'--This and their golden crowns show that they had already finished their course, and taken their places among the citizens of heaven. They are never termed souls, and hence it is probable that they had glorified bodies already. Compare Mat_27:52." [1]

Particular attention must be given to the fact that the four and twenty elders are said to be seated on thrones. Our translation reads "seats;" but the Greek is {GREEK CHARACTERS IN PRINTED TEXT}, thronoi, thrones, the same word as is used three times in verses 2 and 3 and once in verse 4 immediately preceding. Thus the Revised Version reads "Round about the throne were four and twenty thrones, and upon the thrones I saw four and twenty elders sitting." Consequently this passage throws light on the expressions found in Dan_7:9, "I beheld till the thrones were cast down." These are the same thrones, and as has been shown in comments upon that passage, the meaning is not that the thrones were overturned, or cast down, in the ordinary sense of that expression, but placed, or set. The figure is taken from the Eastern custom of placing mats or divans for distinguished guests to sit upon. These four and twenty elders (see comments on Revelation 5) are evidently assistants of Christ in His mediatorial work in the sanctuary on high. When the judgment scene described in Dan_7:9 began in the most holy place, their thrones were placed there, according to the testimony of that passage.