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."
Abideth on him - This implies that he is “now” under the wrath of God, or under condemnation. It implies, also, that it will continue to remain on him. It will “abide” or “dwell” there as its appropriate habitation. As there is no way of escaping the wrath of God but by the Lord Jesus Christ, so those who will not believe must go to eternity “as they are,” and bear alone and unpitied all that God may choose to inflict as the expression of “his” sense of sin. Such is the miserable condition of the sinner! Yet thousands choose to remain in this state, and to encounter alone all that is terrible in the wrath of Almighty God, rather than come to Jesus, who has borne their sins in his own body on the tree, and who is willing to bless them with the peace, and purity, and joy of immortal life.