What is Christian Science and how does it differ from biblical Christianity?

Christian Science was founded by Mary Baker Eddy, who published her foundational text, Science and Health with Key to the Scriptures, in 1875 and organized the Church of Christ, Scientist in Boston in 1879. Eddy, after years of chronic illness and an experience she credited as a sudden healing after reading a Gospel account, came to believe she had discovered the underlying spiritual science behind Jesus's healing ministry, a science she believed had been lost and needed rediscovery.

Eddy taught that her book should be read alongside the Bible as a kind of interpretive key, and Christian Science churches to this day read from both Science and Health and the Bible during services, with Eddy's text functioning as the authoritative lens through which Scripture is understood.

At the heart of Christian Science lies a metaphysical claim: only Spirit, or Mind, is ultimately real, and matter, including sickness, sin, pain, and death, are illusions produced by mistaken mortal belief. Physical illness, in this system, is not a genuine bodily problem to be treated medically but an error of thought to be corrected through prayer and right spiritual understanding.

The Bible teaches something very different about the material world: it is real, and it is good, created intentionally by God. And God saw everything that he had made, and behold, it was very good (Genesis 1:31). Christianity does not treat the physical world as illusion to be transcended, but as good creation, presently marked by the effects of sin, and one day to be renewed, not dissolved (Romans 8:21).

Christian Science distinguishes between Jesus, the human man, and the Christ, an impersonal divine idea or principle that Jesus demonstrated more fully than anyone else but that is, in theory, available to all who achieve sufficient spiritual understanding. This differs sharply from the biblical claim that Jesus himself, in his own person, is both fully God and fully man.

The Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth (John 1:14). Christianity does not present Christ as a principle Jesus merely illustrated especially well; it presents Jesus Christ as God the Son himself, uniquely and permanently, not a demonstration replicable by sufficiently enlightened followers.

Because Christian Science treats sin as ultimately an error of mortal thought rather than genuine moral guilt before a holy God, it correspondingly reinterprets the cross, denying that Jesus's death was a literal, substitutionary atonement for sin and instead treating it largely as a demonstration of the power of Spirit over the illusion of matter and death.

Scripture will not permit that reinterpretation. For all have sinned and fall short of the glory of God (Romans 3:23) describes a real moral condition, not a mental error, and Christ died for our sins in accordance with the Scriptures (1 Corinthians 15:3) describes a real, historical, physical death that actually paid a real penalty. Remove the reality of sin and the reality of the cross, and the Christian gospel has nothing left to offer.

Christian Science churches maintain public Reading Rooms in many cities, quiet spaces where visitors can study Science and Health, the Bible, and the Christian Science Monitor, a respected newspaper the movement still publishes. At its height in the mid-twentieth century, the church counted hundreds of thousands of members, but membership has declined sharply in recent decades as fewer people are drawn to its teachings on healing and reality.

Even as the institutional movement shrinks, its ideas persist in broader American spirituality, particularly the notion that right thinking alone can overcome physical and circumstantial hardship. Christians can affirm the real power of a renewed mind (Romans 12:2) while insisting this is entirely different from denying the reality of suffering itself; Scripture calls believers to hope in the midst of real affliction, not to deny that the affliction exists (2 Corinthians 4:17-18).

Because Christian Science treats illness as an illusion to be overcome through prayer and right thinking, some adherents have refused conventional medical treatment, including for children, with documented cases resulting in preventable deaths. This represents one of the most serious practical dangers associated with the movement's theology.

Christians can affirm the real power of prayer for healing (James 5:14-15) while also recognizing that God has given medicine and physicians as ordinary means of his care, and that even Luke, the beloved physician (Colossians 4:14), served among the apostles without contradiction. Compassion for those raised in Christian Science means gently pointing them toward both a real Savior for real sin and real medical care for real bodies.