Definition

The critical distinction between a mistake that can be corrected and a permanent act that cannot. The ego insists on perceiving sins to preserve itself, while the Holy Spirit sees only a single error calling for correction.

Arc in Brief

The Course redefines sin as a correctable error in perception, undoing guilt and punishment by teaching forgiveness as shared correction that restores innocence.

Across the Sections

Sections
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257 sections
SectionSin / Error
Text Introduction
Introduction
T-1. The Meaning of Miracles
I. Principles of Miracles
II. Revelation, Time and Miracles
III. Atonement and Miracles ⬥Atonement cancels what you cannot undo; miracles correct gently.
IV. The Escape from Darkness Sin is lack of love; correction restores light, not punishment.
V. Wholeness and Spirit
VI. The Illusion of Needs
VII. Distortions of Miracle Impulses
T-2. The Separation and the Atonement
I. The Origins of Separation
II. The Atonement as Defense
III. The Altar of God
IV. Healing as Release from Fear
V. The Function of the Miracle Worker
VI. Fear and Conflict
VII. Cause and Effect
VIII. The Meaning of the Last Judgment
T-3. The Innocent Perception
I. Atonement without Sacrifice
II. Miracles as True Perception
III. Perception versus Knowledge
IV. Error and the Ego Truth undoes misperception by showing it absent, not fighting it.
V. Beyond Perception
VI. Judgment and the Authority Problem
VII. Creating versus the Self-Image
T-4. The Illusions of the Ego
Introduction
I. Right Teaching and Right Learning
II. The Ego and False Autonomy
III. Love without Conflict
IV. This Need Not Be
V. The Ego-Body Illusion
VI. The Rewards of God
VII. Creation and Communication
T-5. Healing and Wholeness
Introduction
I. The Invitation to the Holy Spirit
II. The Voice for God
III. The Guide to Salvation
IV. Teaching and Healing
V. The Ego’s Use of Guilt Guilt needs assault; see lovelessness as remediable, not sinful.
VI. Time and Eternity Let harsh judgment be reinterpreted: accusations dismissed, outcomes undone.
VII. The Decision for God Drop sin labeling; undo the decision without guilt-driven repentance.
T-6. The Lessons of Love
Introduction
I. The Message of the Crucifixion
II. The Alternative to Projection
III. The Relinquishment of Attack
IV. The Only Answer
V. The Lessons of the Holy Spirit
T-7. The Gifts of the Kingdom
I. The Last Step
II. The Law of the Kingdom
III. The Reality of the Kingdom
IV. Healing as the Recognition of Truth
V. Healing and the Changelessness of Mind
VI. From Vigilance to Peace
VII. The Totality of the Kingdom
VIII. The Unbelievable Belief
IX. The Extension of the Kingdom
X. The Confusion of Pain and Joy
XI. The State of Grace
T-8. The Journey Back
I. The Direction of the Curriculum
II. The Difference between Imprisonment and Freedom
III. The Holy Encounter
IV. The Gift of Freedom
V. The Undivided Will of the Sonship
VI. The Treasure of God
VII. The Body as a Means of Communication
VIII. The Body as Means or End
IX. Healing as Corrected Perception
T-9. The Acceptance of the Atonement
I. The Acceptance of Reality
II. The Answer to Prayer
III. The Correction of Error ▲Stop making errors real; share them with the Holy Spirit.
IV. The Holy Spirit’s Plan of Forgiveness Forgive by overlooking first, not by proving wrongdoing real.
V. The Unhealed Healer The miserable sinner stance blocks healing; correction requires understanding.
VI. The Acceptance of Your Brother
VII. The Two Evaluations
VIII. Grandeur versus Grandiosity
T-10. The Idols of Sickness
Introduction
I. At Home in God
II. The Decision to Forget
III. The God of Sickness
IV. The End of Sickness
V. The Denial of God Denial is a mistaken thought—sin against God is impossible.
T-11. God or the Ego
Introduction
I. The Gifts of Fatherhood
II. The Invitation to Healing
III. From Darkness to Light
IV. The Inheritance of God’s Son
V. The “Dynamics” of the Ego
VI. Waking to Redemption
VII. The Condition of Reality
VIII. The Problem and the Answer
T-12. The Holy Spirit’s Curriculum
I. The Judgment of the Holy Spirit Let the Holy Spirit translate fear and attack into calls for love.
II. The Way to Remember God
III. The Investment in Reality
IV. Seeking and Finding
V. The Sane Curriculum
VI. The Vision of Christ
VII. Looking Within
VIII. The Attraction of Love for Love
T-13. The Guiltless World
Introduction
I. Guiltlessness and Invulnerability Don’t make guilt real to undo it; question the past’s verdict.
II. The Guiltless Son of God
III. The Fear of Redemption
IV. The Function of Time
V. The Two Emotions
VI. Finding the Present
VII. Attainment of the Real World
VIII. From Perception to Knowledge
IX. The Cloud of Guilt
X. Release from Guilt
XI. The Peace of Heaven
T-14. Teaching for Truth
Introduction
I. The Conditions of Learning
II. The Happy Learner
III. The Decision for Guiltlessness
IV. Your Function in the Atonement
V. The Circle of Atonement
VI. The Light of Communication
VII. Sharing Perception with the Holy Spirit
VIII. The Holy Meeting Place
IX. The Reflection of Holiness Bring error to light and watch it vanish without attack.
X. The Equality of Miracles
XI. The Test of Truth
T-15. The Holy Instant
I. The Two Uses of Time
II. The End of Doubt
III. Littleness versus Magnitude
IV. Practicing the Holy Instant
V. The Holy Instant and Special Relationships
VI. The Holy Instant and the Laws of God
VII. The Needless Sacrifice
VIII. The Only Real Relationship
IX. The Holy Instant and the Attraction of God
X. The Time of Rebirth
XI. Christmas as the End of Sacrifice
T-16. The Forgiveness of Illusions
I. True Empathy
II. The Power of Holiness
III. The Reward of Teaching
IV. The Illusion and the Reality of Love
V. The Choice for Completion
VI. The Bridge to the Real World
VII. The End of Illusions
T-17. Forgiveness and the Holy Relationship
I. Bringing Fantasy to Truth
II. The Forgiven World
III. Shadows of the Past
IV. The Two Pictures
V. The Healed Relationship
VI. Setting the Goal
VII. The Call for Faith
VIII. The Conditions of Peace
T-18. The Passing of the Dream
I. The Substitute Reality One original mistake, not a list of sins—look without condemnation.
II. The Basis of the Dream
III. Light in the Dream
IV. The Little Willingness
V. The Happy Dream
VI. Beyond the Body
VII. I Need Do Nothing
VIII. The Little Garden
IX. The Two Worlds
T-19. The Attainment of Peace
I. Healing and Faith
II. Sin versus Error ▲Salvation rests on one distinction: condemnation or correction.
III. The Unreality of Sin ▲Guilt keeps sin attractive; bring the hidden mistake to correction.
IV. The Obstacles to Peace Sin’s logic demands death; forgiveness undoes the whole story.
T-20. The Vision of Holiness
I. Holy Week
II. The Gift of Lilies
III. Sin as an Adjustment Sin is a defended perceptual adjustment; see your brother sinless to drop fear.
IV. Entering the Ark Overlook mistakes and share release; don’t call consequences just due.
V. Heralds of Eternity
VI. The Temple of the Holy Spirit
VII. The Consistency of Means and End
VIII. The Vision of Sinlessness Holy Spirit’s vision turns sin to blessing; condemnation belongs to sight.
T-21. Reason and Perception
Introduction
I. The Forgotten Song
II. The Responsibility for Sight Sin is a goal you choose; admit the mistake and let effects fade.
III. Faith, Belief and Vision Withdraw faith from sin’s purpose in relationships; invest in holiness instead.
IV. The Fear to Look Within Look within without fear: the wish to find sin keeps shame alive.
V. The Function of Reason
VI. Reason versus Madness Reason hears “you sinned” as a call for help, not condemnation.
VII. The Last Unanswered Question
VIII. The Inner Shift
T-22. Salvation and the Holy Relationship
Introduction Sin is private perception projected outward; the holy relationship undoes the need.
I. The Message of the Holy Relationship Secrecy is a mistake, not a sin; fear protects the error.
II. Your Brother’s Sinlessness
III. Reason and the Forms of Error ▲Reason sees the locked gate as empty: sin is form-bound error.
IV. The Branching of the Road Lift the veil between you: faith in sin makes barriers; correction removes them.
V. Weakness and Defensiveness Defending sin builds a heavy block to peace—and costs you dearly.
VI. The Light of the Holy Relationship In holy relationship, confusion becomes mistake; forgiven sight overlooks errors everywhere.
T-23. The War Against Yourself
Introduction Stop seeking sin; practice finding innocence so past errors fade.
I. The Irreconcilable Beliefs Misidentification, not real sin: correct the error in self-appraisal.
II. The Laws of Chaos Chaos begins with one law: everyone must sin, so punishment rules.
III. Salvation without Compromise
IV. Above the Battleground
T-24. The Goal of Specialness
Introduction
I. Specialness as a Substitute for Love
II. The Treachery of Specialness Specialness needs special sins; bargains turn love’s gifts into weapons.
III. The Forgiveness of Specialness Unforgivable specialness turns error into sin; complete forgiveness lets it go.
IV. Specialness versus Sinlessness
V. The Christ in You
VI. Salvation from Fear Mistakes may delay, but seeing sin in a brother keeps you both trapped.
VII. The Meeting Place
T-25. The Justice of God
Introduction
I. The Link to Truth
II. The Savior from the Dark
III. Perception and Choice Sin is the claim perception can’t change; forgiveness proves it mistaken.
IV. The Light You Bring What you call sin was only briefly mistaken—bring it to truth.
V. The State of Sinlessness
VI. The Special Function Let the Holy Spirit translate special sin to special grace—purpose changes everything.
VII. The Rock of Salvation
VIII. Justice Returned to Love Vengeance-based justice needs sin; love’s justice corrects and releases.
IX. The Justice of Heaven Calling errors uncorrectable makes them sins; secrecy keeps them unforgivable.
T-26. The Transition
I. The “Sacrifice” of Oneness Sin’s justice demands sacrifice; refuse to sacrifice your brother’s holiness.
II. Many Forms; One Correction One mistake: belief in loss; one correction: there is no loss.
III. The Borderland
IV. Where Sin Has Left ▲Let sin be left behind; the empty space becomes holy again.
V. The Little Hindrance Judgment keeps the past alive; treat the offense as an already-corrected error.
VI. The Appointed Friend Make one illusion real, and the whole sin package enters with it.
VII. The Laws of Healing Place sin belief where it is—mind—and healing reverses projection’s laws.
VIII. The Immediacy of Salvation Belief in sin sends you to past and future; accept correction now.
IX. For They Have Come
X. The End of Injustice
T-27. The Healing of the Dream
I. The Picture of Crucifixion Sickness and death are not proof of sin; they witness a belief system.
II. The Fear of Healing Healing proves sins have no effects; stop assigning sins to your brother.
III. Beyond All Symbols
IV. The Quiet Answer Refuse the world’s question that presumes sin is real; accept the quiet answer.
V. The Healing Example
VI. The Witnesses to Sin Replace sin’s witnesses—pain and pleasure—with the miracle’s evidence.
VII. The Dreamer of the Dream
VIII. The “Hero” of the Dream
T-28. The Undoing of Fear
I. The Present Memory
II. Reversing Effect and Cause
III. The Agreement to Join
IV. The Greater Joining
V. The Alternate to Dreams of Fear Stop sharing the nightmare: sin seems real only when supported together.
VI. The Secret Vows
VII. The Ark of Safety
T-29. The Awakening
I. The Closing of the Gap
II. The Coming of the Guest
III. God’s Witnesses
IV. Dream Roles
V. The Changeless Dwelling Place
VI. Forgiveness and the End of Time
VII. Seek Not Outside Yourself
VIII. The Anti-Christ
IX. The Forgiving Dream
T-30. The New Beginning
Introduction
I. Rules for Decision
II. Freedom of Will
III. Beyond All Idols
IV. The Truth behind Illusions
V. The Only Purpose
VI. The Justification for Forgiveness Forgiveness is justified because nothing real was attacked; unchangeable sin is impossible.
VII. The New Interpretation
VIII. Changeless Reality
T-31. The Final Vision
I. The Simplicity of Salvation
II. Walking with Christ
III. The Self-Accused ★Self-accusation makes sin an identity in the body; sacrifice is unnecessary.
IV. The Real Alternative
V. Self-Concept versus Self Self-concept keeps errors in darkness as sins; light makes change possible.
VI. Recognizing the Spirit
VII. The Savior’s Vision
VIII. Choose Once Again

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