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16. For God so loved the world that He gave His one and only Son, that whosoever believes in Him, should not perish but have eternal life.
This verse encapsulates the essence of Christianity. Notice that -
17. For God did not send his Son into the world to condemn the world, but to save the world through him.
18. Whoever believes in him is not condemned, but whoever does not believe stands condemned already because they have not believed in the name of Godís one and only Son.
38. Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life, for Godís wrath remains on them.