“He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.”
King James Version (KJV)
3:18 He that believeth on him is not condemned - Is acquitted, is justified before God. The name of the only - begotten Son of God - The name of a person is often put for the person himself. But perhaps it is farther intimated in that expression, that the person spoken of is great and magnificent. And therefore it is generally used to express either God the Father or the Son.
Joh 3:18 He that believeth on him is not condemned. "He that believeth and is baptized shall be saved" (Mr 16:16). Faith in Christ is essential to salvation, because it is the power that leads to obedience to him. He that believeth not is condemned already. "Shall be damned" (Mr 16:16). The unbeliever condemns himself. He is lost and refuses to be saved by Christ.