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."
Shall not see life — Shall never enjoy it: there being no way to the kingdom of God, but through Christ Jesus, Acts 4:12. And none can expect to enter into this kingdom but those who obey him; for to such only he is the author of eternal salvation, Hebrews 5:9.