All Commentaries on Ephesians 5:7 Go To Ephesians 5
Ambrosiaster
AD 400
“Once you were darkness” suggests ignorance. No one sees clearly in shadows. The ignorance referred to is disbelief, harking back to pagan days. Those who lived in darkness have been drawn to faith by the grace of God, which has been brought to light, that is, truth. Things that exist are made apparent in the light. Paganism remains deluded as with covered eyes they celebrate their own mysteries as if in the shadows of a cave.