One who believes in the Son has eternal life, but one who disobeys{The same word can be translated "disobeys" or "disbelieves" in this context.} the Son won't see life, but the wrath of God remains on him."
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life ( John 3:16 ).