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The Influence of Sin on Human Decision Making

Sin fundamentally distorts the human capacity to choose rightly. Scripture defines sin as "any want of conformity unto or transgression of the law of God" [1], encompassing both inward disposition and outward action. This definition, drawn from 1 John 3:4, establishes sin not merely as behavioral deviation but as a comprehensive condition affecting the entire person—mind, will, and affections. The biblical witness consistently portrays sin as an active force that corrupts human judgment at its source.

The Origin and Transmission of Moral Corruption

The Fall narrative in Genesis 2–3 records the historical revolt of humanity's first parents against God, an event that introduced sin and misery into human experience [2]. This was not a trivial act but "a love of self, dishonor to God, ingratitude to a benefactor, disobedience to the best of Masters—a preference of the creature to the Creator" [11]. Through Adam's disobedience, "sin entered into the world through one man, and death through sin; and so death passed to all men, because all sinned" [5]. The consequence extends beyond Adam himself: every person born after the Fall bears the image of Adam [6], inheriting a corrupted nature that predisposes them toward rebellion.

This inherited condition manifests comprehensively. Human beings are "born in sin" [6], arriving in the world already inclined toward moral failure. The psalmist's confession that all are "born sinners" [9] establishes that sin precedes conscious choice, shaping the very faculties by which choices are made. The result is a humanity "evil in heart," "blinded in heart," "corrupt and perverse in ways," "depraved in mind," and "without understanding" [6]. These descriptions indicate not isolated moral failures but systemic impairment of the decision-making apparatus itself.

Sin's Mechanism in Corrupting Judgment

Sin operates through a progressive dynamic that James describes: "Then the lust, when it has conceived, bears sin; and the sin, when it is full grown, produces death" [3]. This sequence reveals sin's generative power—it begins with disordered desire, produces specific acts of transgression, and culminates in spiritual death. The process demonstrates how sin functions not as external constraint but as internal compulsion, hijacking natural human desires and redirecting them toward rebellion.

Paul's analysis in Romans 7 exposes the paradoxical nature of sin's influence. He describes a condition where "sin, finding occasion through the commandment, produced in me all kinds of coveting" [7]. The law itself, though holy, becomes an instrument through which sin stimulates rebellion. This reveals sin's perverse logic: the very knowledge of what is right can provoke desire for what is wrong. Paul articulates the resulting internal conflict: "It is no more I—my will is against it; my reason and conscience condemn it. But sin that dwelleth in me—the principle of sin, which has possessed itself of all my carnal appetites and passions, and thus subjects my reason and domineers over my soul" [16]. Two principles contend for mastery: reason illuminated by God's light, and passions dominated by sin's principle.

This internal division demonstrates that sin does not eliminate moral awareness but corrupts its application. The conscience, "that faculty of the mind, or inborn sense of right and wrong, by which we judge of the moral character of human conduct," remains common to all [8]. Yet it has been "perverted by the Fall" and can become "defiled" or "seared" [8]. People retain enough moral perception to recognize certain evils yet simultaneously justify their own participation in them. Jesus warned that persecutors would "think they are doing God service" [8], illustrating how thoroughly sin can invert moral judgment.

The Scope of Sin's Cognitive Impact

Paul's indictment in Romans 1 traces the downward spiral of societies that suppress truth. When people "thought it foolish" to acknowledge God, the consequence was "an unsound mind" [15]. Sin affects not only actions but thoughts themselves; people lose the capacity to use their minds as God intended [15]. This cognitive corruption extends to fundamental categories of moral reasoning. What God calls evil, the sinner rationalizes as necessary or even good. The progression described in Romans 1:18–3:20 establishes that both Gentiles and Jews stand "equally under sin's power and cannot find favor with God by any action of their own" [13].

The universality of this condition means that no human decision-making occurs in a morally neutral state. While "the wicked indulge their sinful nature, the godly fight against it" [9], even the regenerate experience ongoing struggle. The acknowledgment that "we have not sinned" after conversion would make God a liar [14], confirming that actual sins continue even among believers. The difference lies not in sinlessness but in the presence of a new principle that resists the old nature.

Sin as Relational Rebellion

Sin's influence on decision-making cannot be reduced to psychological or sociological categories. It constitutes "an offence against a personal lawgiver and moral governor who vindicates his law with penalties" [1]. Every sinful choice involves not merely poor judgment but active rebellion against divine authority. The sinner remains "always conscious that his sin is (1) intrinsically vile and polluting, and (2) that it justly deserves punishment" [1], even when that consciousness is suppressed or rationalized.

Augustine's observation that "from the devil there is not generation, but corruption" [10] clarifies the nature of sin's transmission. Those who sin become "children of the devil by imitating him, not by proper birth" [10]. This imitation is not superficial mimicry but deep conformity to a pattern of rebellion. The deliberate sinner acts with "an insolent or arrogant attitude" [12], revealing that sin's influence extends beyond weakness into willful defiance.

The power structure Paul identifies—"the sting of death is sin, and the power of sin is the law" [4]—shows how sin leverages even good things for destructive ends. The law, meant to guide, becomes through sin's manipulation an instrument that condemns. This demonstrates sin's parasitic nature: it has no creative power but distorts and corrupts what God has made good, including the human capacity for moral reasoning and choice.

Human decision-making under sin's influence thus operates in a state of comprehensive impairment, where even the faculties meant to discern good from evil have been compromised at their foundation, requiring divine intervention to restore what human effort alone cannot repair.

Sources

  1. Easton's Bible Dictionary “Easton's Bible Dictionary: Sin — Is "any want of conformity unto or transgression of the law of God" (1 John 3:4; Rom. 4:15), in the inward state and habit of the soul, as well as in the outward conduct of the life, whether by omission or commission (Rom. 6:12-17; 7:5-24). It is "not a mere violation of the law of our constitution, nor of the system of things, but an offence against a personal lawgiver and moral governor who vindicates his law with penalties. The soul that sins is always conscious that his sin is (1) intrinsically vile and polluting, and (2) that it justly deserves punishment,”
  2. Easton's Bible Dictionary “Easton's Bible Dictionary: Fall of man — An expression probably borrowed from the Apocryphal Book of Wisdom, to express the fact of the revolt of our first parents from God, and the consequent sin and misery in which they and all their posterity were involved. The history of the Fall is recorded in Gen. 2 and 3. That history is to be literally interpreted. It records facts which underlie the whole system of revealed truth. It is referred to by our Lord and his apostles not only as being true, but as furnishing the ground of all God's subsequent dispensations and dealings with the children of m”
  3. James “Then the lust, when it has conceived, bears sin; and the sin, when it is full grown, produces death. -- James 1:15”
  4. 1 Corinthians “The sting of death is sin, and the power of sin is the law. -- 1 Corinthians 15:56”
  5. Romans “Therefore as sin entered into the world through one man, and death through sin; and so death passed to all men, because all sinned. -- Romans 5:12”
  6. Torrey's Topical Textbook “Torrey's Topical Textbook: Fall of Man, The — By the disobedience of Adam -- Ge 3:6,11,12; Ro 5:12,15,19. Through temptation of the devil -- Ge 3:1-5; 2Co 11:3; 1Ti 2:14. Man in consequence of Made in the image of Adam. -- Ge 5:3; 1Co 15:48,49. Born in sin. -- Job 15:14; 25:4; Ps 51:5; Isa 48:8; Joh 3:6. A child of wrath. -- Eph 2:3. Evil in heart. -- Ge 6:5; 8:21; Jer 16:12; Mt 15:19. Blinded in heart. -- Eph 4:18. Corrupt and perverse in his ways. -- Ge 6:12; Ps 10:5; Ro 3:12-16. Depraved in mind. -- Ro 8:5-7; Eph 4:17; Col 1:21; Tit 1:15. Without understanding. -- Ps 14:2,3; Ro 3:11; 1:31. ”
  7. Romans “But sin, finding occasion through the commandment, produced in me all kinds of coveting. For apart from the law, sin is dead. -- Romans 7:8”
  8. Easton's Bible Dictionary “Easton's Bible Dictionary: Conscience — That faculty of the mind, or inborn sense of right and wrong, by which we judge of the moral character of human conduct. It is common to all men. Like all our other faculties, it has been perverted by the Fall (John 16:2; Acts 26:9; Rom. 2:15). It is spoken of as "defiled" (Titus 1:15), and "seared" (1 Tim. 4:2). A "conscience void of offence" is to be sought and cultivated (Acts 24:16; Rom. 9:1; 2 Cor. 1:12; 1 Tim. 1:5, 19; 1 Pet. 3:21).”
  9. Psalms (Protestant academic) “Tyndale House on Psalms 58:3: 58:3 All human beings are born sinners (see 51:5); however, whereas the wicked indulge their sinful nature, the godly fight against it (Rom 7:19-23; Jas 4:1-10).”
  10. 1 John (Presbyterian) “Jamieson, Fausset & Brown on 1 John 3:8: He that committeth sin is of the devil--in contrast to "He that doeth righteousness," Jo1 3:7. He is a son of the devil (Jo1 3:10; Joh 8:44). John does not, however, say, "born of the devil." as he does "born of God," for "the devil begets none, nor does he create any; but whoever imitates the devil becomes a child of the devil by imitating him, not by proper birth" [AUGUSTINE, Ten Homilies on the First Epistle of John, Homily 4.10]. From the devil there is not generation, but corruption [BENGEL]. sinneth from the beginning--from the time that any beg”
  11. Genesis (Presbyterian) “Jamieson, Fausset & Brown on Genesis 3:13: beguiled--cajoled by flattering lies. This sin of the first pair was heinous and aggravated--it was not simply eating an apple, but a love of self, dishonor to God, ingratitude to a benefactor, disobedience to the best of Masters--a preference of the creature to the Creator.”
  12. Psalms (Protestant academic) “Tyndale House on Psalms 19:13: 19:13 An individual who commits deliberate sins does so with an insolent (86:14) or arrogant (119:21, 69) attitude. • The great sin is rebellion (see 32:1).”
  13. Romans (Protestant academic) “Tyndale House on Romans 1:18: 1:18–3:20 Paul delays exploring the theme of righteousness through faith (see 3:21) until after he first teaches about universal sinfulness. Gentiles (1:18-32) and Jews (2:1–3:8) are equally under sin’s power and cannot find favor with God by any action of their own (3:9-20). 1:18 God’s anger is not a spontaneous emotional outburst, but the holy God’s necessary response to sin. The Old Testament often depicts God’s anger (Exod 32:10-12; Num 11:1; Jer 21:3-7) and predicts a decisive outpouring of God’s wrath on human sin at the end of history. While Paul usually de”
  14. 1 John (Presbyterian) “Jamieson, Fausset & Brown on 1 John 1:10: Parallel to Jo1 1:8. we have not sinned--referring to the commission of actual sins, even after regeneration and conversion; whereas in Jo1 1:8, "we have no sin," refers to the present GUILT remaining (until cleansed) from the actual sins committed, and to the SIN of our corrupt old nature still adhering to us. The perfect "have . . . sinned" brings down the commission of sins to the present time, not merely sins committed before, but since, conversion. we make him a liar--a gradation; Jo1 1:6, "we lie"; Jo1 1:8, "we deceive ourselves"; worst of al”
  15. Romans (Protestant academic) “Tyndale House on Romans 1:28: 1:28 thought it foolish: Sin affects our actions and even our thoughts. One of the serious consequences of turning away from God is an unsound mind; people can no longer use their minds as God intended.”
  16. Romans (Methodist/Wesleyan) “Adam Clarke on Romans 7:20: It is no more I - My will is against it; my reason and conscience condemn it. But sin that dwelleth in me - the principle of sin, which has possessed itself of all my carnal appetites and passions, and thus subjects my reason and domineers over my soul. Thus I am in perpetual contradiction to myself. Two principles are continually contending in me for the mastery: my reason, on which the light of God shines, to show what is evil; and my passions, in which the principle of sin works, to bring forth fruit unto death. This strange self-contradictory propensity led some”
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