“If you learn this new song and begin to sing it here, you will sing it to all eternity. They that once learn this song never forget it. The life that Christ gives His saints is everlasting life. The new name He gives them is an everlasting name, that shall not be cut off. And so the new song that He teaches them is an everlasting song.
They that now learn this new song, the time will soon come when they shall do nothing but sing. They shall cry and mourn no more. ‘And the ransomed of the Lord shall return, and come to Zion with songs and everlasting joy upon their heads: they shall obtain joy and gladness, and sorrow and mourning shall flee away’ (Isaiah 35:10).
In a little time, they shall sing the new song with saints and angels in heaven, and shall sing it there with Jesus Christ. And at the day of judgment, when Christ shall have gathered together all His elect and they shall be all together in complete glory, then shall they ascend up to heaven with Christ and enter into that glorious city with the voice of singing, singing praises to God the Father.
Then will Christ’s heart rejoice, and He will sing to God, and they shall rejoice together and sing with Him.”
–Jonathan Edwards, “They Sing a New Song,” Sermons and Discourses: 1739-1742, in The Works of Jonathan Edwards, Vol. 22, Ed. Harry S. Stout (New Haven: Yale University Press, 2003), 241-242.