Revelation 14:2-3

 "And behold, I am coming quickly. 

Blessed is he who heeds the words of the prophecy of this book."     

Revelation 22:7  NASB

And I heard a sound from heaven like the roar of rushing waters and like a loud peal of thunder. The sound I heard was like that of harpists playing their harps. And they sang a new song before the throne and before the four living creatures and the elders. No one could learn the song except the 144,000 who had been redeemed from the earth.

And I heard a sound from heaven like the roar of rushing waters 
Rev 1:15  His feet were like bronze glowing in a furnace, and his voice was like the sound of rushing waters.
Ezekiel 43:1-2  Then the man brought me to the gate facing east, and I saw the glory of the God of Israel coming from the east. His voice was like the roar of rushing waters, and the land was radiant with his glory.
Revelation 19:6  Then I heard what sounded like a great multitude, like the roar of rushing waters and like loud peals of thunder shouting: "Hallelujah! For our Lord God Almighty reigns."

and like a loud peal of thunder 
Revelation 6:1  I watched as the Lamb opened the first of the seven seals. Then I heard one of the four living creatures say in a voice like thunder, "Come!"

The sound I heard was like that of harpists playing their harps 
Revelation 5:8  And when he had taken it, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp and they were holding golden bowls full of incense, which are the prayers of God's people.
Revelation 15:2  And I saw what looked like a sea of glass glowing with fire and, standing beside the sea, those who had been victorious over the beast and its image and over the number of its name. They held harps given them by God ... 

And they sang a new song 
Revelation 5:9  And they sang a new song, saying: "You are worthy to take the scroll and to open its seals, because you were slain, and with your blood you purchased for God persons from every tribe and language and people and nation."

before the throne and before the four living creatures 
Revelation 4:6  Also in front of the throne there was what looked like a sea of glass, clear as crystal. In the center, around the throne, were four living creatures, and they were covered with eyes, in front and in back.

and the elders 
Revelation 4:4  Surrounding the throne were twenty-four other thrones, and seated on them were twenty-four elders. They were dressed in white and had crowns of gold on their heads.

No one could learn the song except the 144,000 who had been redeemed from the earth 
Revelation 7:3-4  "Do not harm the land or the sea or the trees until we put a seal on the foreheads of the servants of our God." Then I heard the number of those who were sealed: 144,000 from all the tribes of Israel.
Revelation 14:1  Then I looked, and there before me was the Lamb, standing on Mount Zion, and with him 144,000 who had his name and his Father's name written on their foreheads.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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