Revelation 14:

6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,

7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.

8 And there followed another angel, saying, Babylon is fallen, is fallen, that great city, because she made all nations drink of the wine of the wrath of her fornication.

9 And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,

10 The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:

11 And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name.

12 Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.

In the spiritual interpretation of the book of Revelation all of the angels(messengers) of the prophecy are the Holy Spirit active and alive in the individual Christian soul. The entire prophecy takes place in the individual Christian soul, "every eye shall see" the Revelation of Jesus Christ.

And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people, Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.

The Holy Spirit is the angel(messenger) of the Christian soul that has received the Holy Spirit in Christ - Acts 2:39 "For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call"

And there followed another angel, saying, Babylon is fallen, is fallen, that great city, because she made all nations drink of the wine of the wrath of her fornication.

The Holy Spirit in each individual Christian soul shows that soul the fall of Adamic Babylon that once ruled that soul. The fallen nations is the old Adamic kingdom of every Christian soul. Nations is symbol for Adamic doctrines that rule the soul. Babylon is a her, the brings spiritual fornication(marriage) to every soul locked in Babylon. The Holy Spirit teaches the Christian soul its freedom from fallen Babylon.

And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,

The third angel(messenger) is the Holy Spirit teaching the soul the effects of submission(worship) to Babylon. Jesus Christ is present with each individual Christian soul as that soul learns to submit to Jesus Christ, king and kingdom, alone, only, and completely.

Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.

A saint is what the soul in Christ is. The term saint means "made holy", set apart from all that is unholy. Holiness is a reality in Christ and a process in each individual Christian soul. The soul that submits to Christ, is holy, patient, faithful, and true.