The word Gospel means Good News!

        Four forms of the Gospel are mentioned in the New Testament.

        The Gospel of the Kingdom - Matthew 24:14.
        The Gospel of the Grace of God - Acts 20:24.
        My Gospel - Romans 2:16,  Acts 26:16-18.
        The Everlasting Gospel - Revelation 14:6.

In John's vision, he see many angels at work.  He sees one flying in mid-heaven, that is, in the heaven or atmosphere that surrounds earth.

                The angel's mission is the preach the 'Everlasting Gospel' to every nation, kindred, tongue and people.

                            This is the first and only place in the Bible where an angel is commissioned to preach the Gospel.  In this Gospel Age only men who are redeemed can preach, but at the End Time, just before Jesus returns, an angel will preach the Everlasting Gospel.

The Three Angel Messengers
First Angel - The Everlasting Gospel
Revelation 14:6-7

"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.'"

These Sealed Ones are the "First-Fruits" on the restored nation of Israel, not the first-fruits of the Church.

          These 144,000 sealed ones are called virgins.   The fact that they are spoken of as not having been 'defiled with women' shows that they are either all men of the character of Paul the Apostle, who didn't marry, or most likely persons of either sex, who kept themselves from fornication which was the sin of the Great Tribulation.

The New Song that the Harpers sing is a double song, the "Song of Moses" and the "Song of the Lamb" and no man can learn the Song except the 144,000 who were redeemed from the earth.

         This tells us that the 144,000 Sealed Ones are in Heaven.  They were either raptured or died martyr's deaths.

The Elders represent the Church.  These Harpers are not the Church because the sing before (in front of) the Elders.

         These Harpers are those who stand on the "Sea of Glass" before the Throne.

Following the voice that John heard was the singing of "Harpers" and their harps.

         These Harpers sing a "New Song" before the Throne and the Four Living Creatures and the Elders.

When John looked at the Lamb and the 144,000 Sealed Ones who stood with him, he heard a voice from Heaven, as the "voice of many waters", and as the voice of a "great thunder", which sounds like the one who spoke from the midst of the Lampstands or the Lambs Himself.

The 144,000 standing with the Lamb on Mount Zion are the 144,000 "Sealed Ones", 12,000 from each of the 12 Tribes of Israel.

        They were sealed in the foreheads.  That sealing was the writing on their foreheads of the name of the Lamb and of the Lamb's Father.

The Lamb, of course, is Jesus Christ and the Mount Zion isn't Mount Zion of the earthly Jerusalem but of the Heavenly which Paul spoke of, "But ye are come unto Mount Zion and unto the city of the living God, 'the Heavenly Jerusalem' and to an innumerable company of angels, to the General Assembly and Church of the First Born, which are written in Heaven and to God the Judge of all and to the spirits of the just men made perfect."

The Seven Vials
The Lamb on Mount Zion.

"And I looked and lo, a Lamb stood on Mount Zion and with Him a hundred forty and four thousand, having His Father's name written in their foreheads.
And I heard a voice from Heaven, as the voice of many waters and as the voice of a great thunder: and I heard the voice of Harpers harping with their harps: and they sung as it were a new song before the Throne and before the Four Beasts and the Elders: and no man could learn that song but The Hundred and Forty and Four Thousand, which were redeemed from the earth. These are they which were not defiled with women: for they are virgins.  These are they which follow the Lamb whithersoever He goeth.
These were redeemed from among men, being the first fruits unto God and to the Lamb.
And in their mouth was found no guile: for they are without fault before the Throne of God."

At the end of the Great Tribulation, the Lord Jesus Christ will come back and the Dragon, the Anti-God (satan) will be cast into the bottomless pit for 1,000 years.

           The Beast, the Anti-Christ and the False Prophet, the Anti-Spirit will be cast alive into the Lake of Fire.

Times will be awful for those who will not worship the Beast.

          If they can't buy or sell without the Mark, they will have to beg, starve or be killed.

                  Death will be by guillotine.  The daily papers will have a list of the names of the ones beheaded the day before so they will try frighten the people into obedience to the law.

Nebuchadnezzar's Image which is a type of the image of the Beast, was 60 cubits high, 6 cubits wide and 6 instruments of music was used to summon the worshippers.

The Antichrist with his tentacles will cause the people to be powerless and no man can buy or sell who has not taken the Mark of the Beast on their right hand or their forehead.

         The mark may be the number of the Beast or 666 is the number of man.  Man was created on the sixth day.

The False Prophet will cause all, both small and great, rich and poor, free and bond, to receive a mark in their right hand or in their forehead; and that no man might buy or sell, save he that has the mark or the name of the beast or the number of his name.

          This is what the world is coming to, today.  The time is not far off.

There will be many who will not bow down to the Antichrist and worship the Image of the Beast and will not escape, yet God will in some miraculous way deliver some.

The False Prophet will bring down fire from heaven as one of his miracles.

            He will then command the people to make an image of the Beast.  Mankind has a strange weakness that they must have some visible God to worship.

                      One thing about the image is that the False Prophet will have power to give life to it and cause it to speak and to demand that all who will not worship it shall be put to death.