Once we were darkness, “but now [we] are light in the Lord.” As children of light, we should walk in that light, “discerning what is pleasing to the Lord.” (Ephesians 5:10) Paul repeats himself, so that we know how important is his point. He says again that we are not to walk “as unwise people but as wise.” (Ephesians 5:15) We are not to be foolish; rather we are to “understand what the Lord’s will is.” (Ephesians 5:17)
“Everything exposed by the light is made clear,” says Paul. Jesus says that people come into the light so their deeds are exposed as “accomplished by God” (John 3:21) while other people hate and avoid the same light, remaining in darkness so that their deeds are not exposed as evil.
As we are children of light, a natural consequence is that we expose “the fruitless deeds of darkness.” (Ephesians 5:11) For this reason, Jesus tells us not to be surprised that the world hates us. (John 15:19) After all, the world hates Jesus first; it follows that the world hates us as well.
Our role is to reflect the Lord, to reflect His light. His light is love — sometimes soothing, sometimes searing. “The truth is in Jesus.” (Ephesians 4:21)