Faith is necessary, because it gets you through times when mere human effort alone would not suffice. However, Salvation originally had an esoteric meaning, marred over the centuries by ignorance and petty competition among different sects of Christians. Salvation, to the Gnostics and other early Christians, meant what Samadhi means to Hindus; Onesness with the Spirit of God, realizing oneself as Sat, Chit, Ananda (Being, Consciousness and Bliss).
There it's very clear that Jesus Himself believed people to be under God's wrath unless they were "born again" in Him.
Not everyone has forgiveness from evil.