Then spoke Jesus again unto them, saying,
I am the light of the world: he that follows me shall not walk in darkness, but shall have the light of life.
All Commentaries on John 8:12 Go To John 8
Cyprian of Carthage
AD 258
For if we are priests of God and of Christ, I do not know any one whom we ought rather to follow than God and Christ, since He Himself emphatically says in the Gospel, "I am the light of the world; he that followeth me shall not walk in darkness, but shall have the light of life.".
For he goeth unconsciously to Gehenna, in ignorance and blindness; he is hurrying into punishment, departing, that is, from the light of Christ, who warns and says, "I am the light of the world. He that followeth me shall not walk in darkness, but shall have the light of life.".
Whence, in the Gospel according to John, the Lord says: "I am the light of the world. He that will follow me shall not walk in darkness, but shall have the light of life."