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."
Beautiful humility of John in taking his rightful place. He said, "You bear witness that I testified of him. Now, look, He's the bridegroom and I'm just the best man. It's the bridegroom that takes the bride. But His best man rejoices when he hears Him. And herein, I rejoice because of the bridegroom's voice, and my joy, therefore, is fulfilled." How? In bringing honor and glory to Jesus. "For He must increase and I must decrease." So say we all!