What does John 3:19 mean?
The opening verses of the gospel of John refer to Jesus as "the Light," an important concept in Hebrew culture (John 1:4–9). Light reveals truth and exposes what was hidden. According to this verse, that is the ultimate reason many people reject Jesus. His life and teachings expose every single person as a sinner (Romans 3:10) and proves the things we do to be morally wrong (Romans 4:7). Many people would prefer to hide in darkness, rather than be exposed by the light (John 1:5; 8:12).It's crucial to remember that those who are saved are not "better" than those who reject Christ; they are simply sinners who confess and believe (1 John 1:6–7). Each person is "condemned already" for sin (John 3:18) and can hope for rescue only by turning to Jesus (John 14:6).
The word translated as "evil" here is the Greek ponēra. This term implies both evil and a sense of drudgery, labor, and effort. Mankind is not just immoral, but we work hard at being immoral! A life of sin is a hard life (John 10:10; Isaiah 14:3; Matthew 11:28).