“In order to learn the new song, you must hear the melody of the voice of Christ in the gospel.
You have heard that the glorious gospel is that out of which this song is to be learned, and that ’tis Christ that must teach it. And this is the way that He teaches it: by causing the soul to hear the melody of His own voice in the gospel.
’Tis Christ that speaks to us in the gospel. Many hear His words, but they perceive no sweetness in them. They perceive no pleasantness in His voice, in the doctrines and invitations and promises of the gospel. ’Tis all an insipid thing and dead letter to them.
But to the godly, Christ’s mouth is found to be most sweet. You must perceive the sweetness of the voice. You must see the glory of those doctrines, and the sweetness of those invitations, and the exceeding preciousness of those promises.”
–Jonathan Edwards, “They Sing A New Song (Revelation 14:3)” in Sermons and Discourses, 1739–1742 (ed. Harry S. Stout, Nathan O. Hatch, and Kyle P. Farley; vol. 22; The Works of Jonathan Edwards; New Haven; London: Yale University Press, 2003), 22: 243-244.