The Everlasting Gospel = 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.
Revelation 14:1-7 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.
{"saw another angel" ... as if the last one was seen only shortly before}
Matthew 24:14-24 And this Gospel of the Kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
... When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand); then let them which be in Judaea flee into the mountains. Let him which is on the housetop not come down to take any thing out of his house, neither let him which is in the field return back to take his clothes. And woe unto them that are with child, and to them that give suck in those days! But pray ye that your flight be not in the winter, neither on the Sabbath Day:
... For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
24:23 Then if any man shall say unto you, Lo, here [is] Christ, or there, believe not.
24:24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders, insomuch that, if possible, they shall deceive the very elect.
eklektos = chosen, elect.
Matthew 22:2-14 For many are called, but few chosen.
Revelation 17:12-14 These shall make war with the Lamb, and the Lamb shall overcome them: for He is Lord of lords, and King of kings, and they that are with Him, called and chosen and faithful.
pistos = faithful, sure, true.
Revelation 2:8-10 Fear none of those things which thou shalt suffer: behold, the devil shall cast [some] of you into prison, that ye may be tried; and ye shall have tribulation ten days: be thou faithful unto death, and I will give thee a crown of life.
__________________
* Revelation 11:18 And the nations were angry, and thy wrath is come, and the time of the dead, that they should be judged, and that thou shouldest give reward unto thy servants the prophets, and to the saints, and them that fear thy name, small and great; and shouldest destroy them which destroy the earth.
Psalms 2:1-9 Wherefore did the heathen rage, and the nations imagine vain things? The kings of the earth stood up, and the rulers gathered themselves together, against the Lord, and against His Christ; saying, Let us break through Their bonds, and cast away Their yoke from us.LXX
** Revelation 11:12-13 And they heard a great voice from heaven saying unto them, Come up hither. And they ascended up to heaven in a cloud; and their enemies beheld them. And the same hour was there a great earthquake, and the tenth part of the city fell, and in the earthquake were slain of men seven thousand: and the remnant were affrighted, and gave glory to the God of Heaven.