Psalms 98:1

We are here called upon again to sing unto the Lord a new song, as before, Psa 96:1. "Sing a most excellent song, the best song you have." Let the song of Christ's love be like Solomon's on that subject, a song of songs. A song of praise for redeeming love is a new song, such a song as had not been sung before; for this is a mystery which was hidden from ages and generations. Converts sing a new song, very different from what they had sung; they change their wonder and change their joy, and therefore change their note. If the grace of God put a new heart into our breasts, it will therewith put a new song into our mouths. In the new Jerusalem there will be new songs sung, that will be new to eternity, and never wax old. Let this new song be sung to the praise of God, in consideration of these four things: - I. The wonders he has wrought: He has done marvellous things, Psa 98:1. Note, The work of our salvation by Christ is a work of wonder. If we take a view of all the steps of it from the contrivance of it, and the counsels of God concerning it before all time, to the consummation of it, and its everlasting consequences when time shall be no more, we shall say, God has in it done marvellous things; it is all his doing and it is marvellous in our eyes.

— Matthew Henry's Concise Commentary (public domain)