Gnosticism, a heresy rampant during the early church, said salvation was only available to those who possessed the hidden truths of Christ. Bultmann espouses a kind of neo-gnosticism, a wholly subjective encounter with Jesus, which is the basis for many people’s professed Christianity. A personal encounter with Jesus is necessary, but we do not believe simply because He “lives in our heart” (1 Cor. 3:16). We believe because He truly came, truly died, and truly rose again.
Even during the apostolic times, there were unorthodox men and women who crept into the church and perverted her teaching. We must remain vigilant against the wolves who seek to destroy the faith of God’s flock. Study the historic truths of Christian orthodoxy and ask the Lord to help you discern truth from error in the church.