Again, a new commandment I write unto you, which thing is true in him and in you: because the darkness is past, and the true light now shines.
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Augustine of Hippo
AD 430
Not another, but the selfsame which he has called old, the same is also new. Why? Which thing is true in Him and in you. Why old, you have already heard: i.e., because you knew it already. But why new? Because the darkness is past, and the true light now shines. Lo, whence it is new: because the darkness pertains to the old man, but the light to the new man. What says the Apostle Paul? Put off the old man, and put on the new. Colossians 3:9-10 And again what says he? You were sometime darkness, but now light in the Lord. Ephesians 5:8
Nay, but this whole world is the one house of all; in which world it is more the heathen, who is found in darkness, whom the grace of God enlightens, than the Christian, who is already in God's light.