THEODORE OF MOPSUESTIA
(c. 350—428)
Now is the time for me to say: ‘Sing to the Lord a new song, for He has done marvellous things.’ Indeed a new song is required for new things, as we are dealing with the New Testament which God established for the human race through the Economy of our Lord Jesus Christ, when He abolished all old things and showed new things in their place. Everyone who is in Christ is a new creature; old things are passed away and all things are become new. Death and corruption have ceased, passions and mutability have passed away, and the life of the new creature has been made manifest, a life which we hope to reach after our resurrection from the dead.