John 8:24

I said therefore unto you, that ye shall die in your sins: for except ye believe that I am he, ye shall die in your sins.

This was another of the "hard sayings" (John 6:60) of Jesus, especially so for the Pharisees. Here is a dogmatic affirmation that forgiveness of sins is possible only for them that believe in the Lord Jesus Christ. Refusal to believe in him is forfeiture of eternal life. Jesus is the unique source of salvation. It was the battle cry of the early church that "There is none other name under heaven given among men" wherein we must be saved. No other system, philosophy, ethics, morals, or anything else can provide the tiniest ray of hope apart from Christ. Everlasting life is "in him"; it is nowhere else.