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."
Unbelievers will experience God’s wrath primarily in the future (cf. John 5:28-29). This is the only reference to God’s wrath in John’s Gospel or his epistles, though it appears six times in the Book of Revelation (cf. Romans 1:18 to Romans 3:26).