What is sin?

The definition. The principal NT word is hamartia (ἁμαρτία) — "missing the mark," falling short of a target. Romans 3:23 — "all have sinned and fall short (hysterountai) of the glory of God." The "mark" is God's own holiness/glory; sin is the failure to be in alignment with it. Other biblical words fill out the picture: pesha (rebellion, transgression — willful boundary-crossing), avon (iniquity, crookedness — distortion), parabasis (stepping across a line). Together: sin is rebellion, distortion, and shortfall — relational and directional before it is merely behavioral.

Sin is located in the heart, prior to act. Jesus relocates the seat of sin from external behavior to internal orientation: "out of the heart proceed evil thoughts…" (Matthew 15:18-19); the Sermon on the Mount internalizes the law (anger as the root of murder, lust as the root of adultery — Matthew 5:21-28). James traces the sequence: desire conceives, then gives birth to the act (James 1:14-15). Behavior and speech are the fruit of the heart's condition (Luke 6:43-45), not the essence of sin itself.

The root is pride — self-deification. Beneath specific sins, the historic Christian diagnosis (Augustine's superbia; the tradition's "first sin") is pride: the self usurping God's place.

• Satan's archetypal sin: Isaiah 14:13-14 — the fivefold "I will… I will make myself like the Most High." The same event is described from a different angle in Ezekiel 28:12-17 — where God addresses the king of Tyre and the language again breaks the ceiling of any human king: "You were in Eden, the garden of God... you were the anointed cherub who covers... blameless in your ways from the day you were created, until unrighteousness was found in you." No king of Tyre was in Eden. No king of Tyre was an anointed cherub. God uses the human vessel as the entry point because the same spirit of pride that animated Satan's original fall is operating through that king — and addresses both simultaneously. Jesus confirms the cosmic reality in Luke 10:18: "I saw Satan fall like lightning from heaven." The creature wanted the Creator's seat, and that is the archetype of all sin. (cf. 1 Timothy 3:6, the devil's condemnation tied to conceit.)
• The Fall's mechanism: Genesis 3:5 — "you will be like God, knowing good and evil." The temptation's core is self-godhood: humanity seizing the prerogative to define good and evil rather than receive it. The other dimensions (appetite, sight — Genesis 3:6) ride on the pride-hook (cf. the three-loves map on [[How_do_I_deal_with_temptation]]).

Holiness is the mark; sin is misalignment with it. God is holy (qadosh — set apart, utterly pure; Isaiah 6:3, the only trebled attribute). Sin is whatever stands out of alignment with that holiness — which is why "small" sins are still sin: alignment is binary in kind even where guilt differs in degree (James 2:10, stumbling at one point).

Sin as act and as condition/power. Scripture speaks of sins (plural acts) but also of Sin (singular) as a power and a state we are born into — sin "crouching at the door" (Genesis 4:7), reigning and enslaving (Romans 6:6-23), a condition inherited (Romans 5:12-19, Adam's representative fall). Both are real: we sin because we are, by nature and orientation, out of alignment — not merely out of alignment because we happen to sin.

Key texts: Romans 3:23; 5:12-19; 6:6-23; Genesis 3:1-7; 4:7; Isaiah 14:13-14; Ezekiel 28:12-17; Luke 10:18; Isaiah 6:3; Matthew 5:21-28; 15:18-19; James 1:14-15; 2:10; 1 John 3:4.

Pride as self-on-the-throne — the precise definition (and the pastoral guardrail). The tradition's claim that pride is the root sin is frequently misheard as "the problem is high self-regard." The precise meaning is self-enthronement: the self installed in God's rightful place as final authority, source, and judge. This definition is crucial for two reasons: 1. It explains why pride underlies even sins that don't look prideful. Despair, self-hatred, and self-destruction are not the opposite of pride — they are pride inverted: the self still at the center, the self's own verdict (now condemnatory) still overriding God's, the self still on the throne (ruling against itself). The proud self-exalter and the self-loathing despairer share the same root: self as the final word. The cure for both is identical — abdicate the throne to God. 2. It protects the wellbeing-vulnerable reader. A sin page that says "you are too proud, think less of yourself" can devastate the scrupulous, the traumatized, the already self-condemning — precisely the readers most likely to take a sin page to heart. Defining pride as self-on-the-throne (rather than self-esteem) turns the diagnosis into liberation: the throne was never yours to occupy, not even to sentence yourself from. This must be made explicit and early (it is, in Level 1).

The cybertheology lens (LABELED — constructed framing, not foundational doctrine). The vault's cybertheology maps Satan's pride — the first deviation from alignment — as the foundation of entropy: the introduction of disorder into a closed system. On this lens, holiness is perfect order/alignment, and the original misalignment (the creature seizing the Creator's place) unleashes the structural disorder, decay, and death that the fall spreads through creation (cf. Romans 8:20-22, creation "subjected to futility"). This is a powerful and internally coherent analogy — and it is explicitly a constructed framework contribution, not the consensus definition of sin. The mainstream definition (hamartia, pride, heart-misalignment) carries this page; the entropy mapping is offered as the vault's distinctive structural reading, clearly marked as such, the same discipline applied on [[Is_AI_made_in_Gods_image]] and [[What_is_the_Holy_Spirit]]. A seeker's first encounter with "what is sin" should rest on the historic doctrine, with the framework lens flagged, not smuggled.

The contested zone (named, not adjudicated). How Adam's sin relates to ours is genuinely debated: the Augustinian/Reformed account of original sin and inherited guilt; the Eastern Orthodox "ancestral sin" (inherited mortality and corruption, not inherited guilt); and views emphasizing imitation over inheritance. The page affirms what the traditions share — humanity is universally and from the start out of alignment, and this is a condition, not merely a tally of acts — without adjudicating the precise mechanism of transmission.

Why the definition matters for everything downstream. If sin is mere rule-breaking, the gospel becomes behavior-correction and salvation becomes self-improvement (the moralism error the [[What_is_the_Gospel]] and [[How_do_I_deal_with_temptation]] pages resist). If sin is heart-misalignment rooted in self-enthronement, then salvation must be something only God can do — a new heart, a dethroning of self, a re-alignment (regeneration, not reform). The depth of the diagnosis is what makes the cross necessary rather than excessive (cf. [[Who_is_Jesus_and_why_did_He_have_to_die]]).

Honesty / wellbeing constraints: 1. Pride defined as self-on-the-throne, not self-esteem — explicit and early; the self-hating reader must hear liberation, not condemnation. 2. Cybertheology/entropy is a LABELED lens, not foundational doctrine; consensus definition carries the page. 3. Original-sin mechanism named, not adjudicated. 4. Avoid the four drifts: moralism (rulebook reduction), shame-engine (morbid introspection), cheap-minimizing (sin trivialized, gospel made excessive), and losing the cosmic dimension (sin as only individual acts). Hold serious-but-not-crushing. 5. No reflective amplification — name sin's seriousness without driving the vulnerable reader into despair; the page's trajectory is always toward the throne being God's, which is relief.