John 3:16–21 begins with the most easily recognized portion of any holy book on Earth: John 3:16. This is a one-sentence summary of the entire gospel. Still, the verses which follow are just as critical for understanding the Christian message. Christ wasn’t sent to judge the world, but to bring salvation. This is an expression of God’s incredible love. However, those who do not believe in Jesus Christ are condemned in the eyes of God. Human preference for sin causes many to choose darkness over the Light.
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“John 3:16” Bibleref.com