The worship of the New Testament . . . is nothing else than song, praise, and thanksgiving.
This is a unique song. God does not care for our sacrifices and works.
He is satisfied with the sacrifice of praise.
I have no one to sing and chant about but Christ,
in whom alone I have everything.
Him alone I proclaim, in Him alone I glory,
for He has become my salvation, that is, my victory.
— martin Luther, Lectures on Isaiah