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The Nature of Sin and Impurity in Christian Ethics

Sin, in Christian ethics, is fundamentally defined as "any want of conformity unto or transgression of the law of God" [1]. This definition encompasses both outward actions and the inward state of the soul, whether through acts of commission or omission [1]. The biblical understanding of sin emphasizes its nature as a transgression of God's law (1 John 3:4) [3, 16]. It is not merely a violation of human constitution or natural order, but an offense against a personal, moral Lawgiver who enforces His law with penalties [1].

The Bible describes sin as originating from the devil (1 John 3:8) [3, 10] and as coming from the heart (Matthew 15:19) [3]. All unrighteousness is considered sin (1 John 5:17) [3], and even the omission of known good acts is sin (James 4:17) [3]. Furthermore, anything not done in faith is sin (Romans 14:23) [3]. The imaginations of the unrenewed heart are also described as sinful (Genesis 6:5; 8:21) [3]. Sin is characterized as rebellion against God (Deuteronomy 9:7) [3], works of darkness (Ephesians 5:11) [3], and dead works (Hebrews 6:1) [3].

Christian theology recognizes that all human beings are born with a sinful nature [9]. This inherent sinfulness manifests in various ways, including ingratitude [4], ignorance of God [5], and a preference for the creature over the Creator [11]. Deliberate sins are often committed with an insolent or arrogant attitude, representing rebellion against God [12]. The apostle Paul extensively discusses universal sinfulness, arguing that both Gentiles and Jews are under sin's power and cannot earn God's favor through their own actions (Romans 1:18–3:20) [13].

Impurity, closely related to sin, refers to that which is intrinsically vile and polluting [1]. God's will for believers is holiness, which involves embracing all aspects of a person's life and staying away from sexual sin (1 Thessalonians 4:3-4) [14]. The example of Christ is presented as the standard for purity, righteousness, and holiness (1 Peter 1:15-16; 1 John 3:3) [2].

Despite the pervasive nature of sin, Christian ethics emphasizes the possibility of forgiveness and cleansing. If individuals acknowledge their sins, God is faithful and just to forgive them and cleanse them from all unrighteousness (1 John 1:9) [7]. This forgiveness is provided through the sacrifice of Jesus Christ, who mediates between God and humanity (1 Timothy 2:5; Hebrews 2:17) [6, 15]. God's anger is not an arbitrary emotional outburst but a necessary response to sin [13], yet He is also described as forgiving iniquity, disobedience, and sin (Exodus 34:7) [8].

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. Torrey's Topical Textbook “Torrey's Topical Textbook: Example of Christ, The — Is perfect -- Heb 7:26. Conformity to, required in Holiness. -- 1Pe 1:15,16; Ro 1:6. Righteousness. -- 1Jo 2:6. Purity. -- 1Jo 3:3. Love. -- Joh 13:34; Eph 5:2; 1Jo 3:16. Humility. -- Lu 22:27; Php 2:5,7. Meekness. -- Mt 11:29. Obedience. -- Joh 15:10. Self-denial. -- Mt 16:24; Ro 15:3. Ministering to others. -- Mt 20:28; Joh 13:14,15. Benevolence. -- Ac 20:35; 2Co 8:7,9. Forgiving injuries. -- Col 3:13. Overcoming the world. -- Joh 16:33; 1Jo 5:4. Being not of the world. -- Joh 17:16. Being guileless. -- 1Pe 2:21-22. Suffering wrongfully. --”
  3. Torrey's Topical Textbook “Torrey's Topical Textbook: Sin — Is the transgression of the law -- 1Jo 3:4. Is of the devil -- 1Jo 3:8; Joh 8:44. All unrighteousness is -- 1Jo 5:17. Omission of what we know to be good is -- Jas 4:17. Whatever is not of faith is -- Ro 14:23. The thought of foolishness is -- Pr 24:9. All the imaginations of the unrenewed heart are -- Ge 6:5; 8:21. Described as Coming from the heart. -- Mt 15:19. The fruit of lust. -- Jas 1:15. The sting of death. -- 1Co 15:56. Rebellion against God. -- De 9:7; Jos 1:18. Works of darkness. -- Eph 5:11. Dead works. -- Heb 6:1; 9:14. The abominable thing that Go”
  4. Torrey's Topical Textbook “Torrey's Topical Textbook: Ingratitude — A characteristic of the wicked -- Ps 38:20; 2Ti 3:2. Often exhibited By relations. -- Job 19:14. By servants. -- Job 19:15,16. To benefactors. -- Ps 109:5; Ec 9:15. To friends in distress. -- Ps 38:11. Saints should avoid the guilt of -- Ps 7:4,5. Should be met with Prayers. -- Ps 35:12,13; 109:4. Faithfulness. -- Ge 31:38-42. Persevering love. -- 2Co 12:15. Punishment of -- Pr 17:13; Jer 18:20,21. Exemplified Laban. -- Ge 31:6,7. Chief butler. -- Ge 40:23. Israel. -- Ex 17:4. Men of Keilah. -- 1Sa 23:5,12. Saul. -- 1Sa 24:17. Nabal. -- 1Sa 25:5-11,21. ”
  5. Torrey's Topical Textbook “Torrey's Topical Textbook: Ignorance of God — Ignorance of Christ is -- Joh 8:19. Evidenced by Want of love. -- 1Jo 4:8. Not keeping his commands. -- 1Jo 2:4. Living in sin. -- Tit 1:16; 1Jo 3:6. Leads to Error. -- Mt 22:29. Idolatry. -- Isa 44:19; Ac 17:29,30. Alienation from God. -- Eph 4:18. Sinful lusts. -- 1Th 4:5; 1Pe 1:14. Persecuting saints. -- Joh 15:21; 16:3. Is no excuse for sin -- Le 4:2; Lu 12:48. The wicked, in a state of -- Jer 9:3; Joh 15:21; 17:25; Ac 17:30. The wicked choose -- Job 21:14; Ro 1:28. Punishment of -- Ps 79:6; 2Th 1:8. Ministers should Compassionate those in. -- ”
  6. Torrey's Topical Textbook “Torrey's Topical Textbook: Human Nature of Christ, The — Was necessary to his mediatorial office -- 1Ti 2:5; Heb 2:17; Ga 4:4,5; 1Co 15:21; Ro 6:15,19. Is proved by his Conception in the Virgin's womb. -- Mt 1:18; Lu 1:31. Birth. -- Mt 1:16,25; 2:2; Lu 2:7,11. Partaking of flesh and blood. -- Joh 1:14; Heb 2:14. Having a human soul. -- Mt 26:38; Lu 23:46; Ac 2:31. Circumcision. -- Lu 2:21. Increase in wisdom and stature. -- Lu 2:52. Weeping. -- Lu 19:41; Joh 11:35. Hungering. -- Mt 4:2; 21:18. Thirsting. -- Joh 4:7; 19:28. Sleeping. -- Mt 8:24; Mr 4:38. Being subject to weariness. -- Joh 4:6. ”
  7. I John “I John 1:9 (Geneva1599) — If we acknowledge our sinnes, he is faithfull and iust, to forgiue vs our sinnes, and to clense vs from all vnrighteousnes.”
  8. Exodus “keeping loving kindness for thousands, forgiving iniquity and disobedience and sin; and that will by no means clear the guilty, visiting the iniquity of the fathers on the children, and on the children’s children, on the third and on the fourth generation.” -- Exodus 34:7”
  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 Thessalonians (Protestant academic) “Tyndale House on 1 Thessalonians 4:3: 4:3 God’s will is for you to be holy: The foundation of Christian ethics is not philosophical speculation about virtue but doing God’s will (Rom 12:1-2; Eph 6:6; Heb 10:36; 13:20-21). Holiness (1 Thes 4:4, 7) embraces all of a person’s life (5:23); here it involves staying away from sexual sin (Greek porneia, any sexual union outside marriage).”
  15. Hebrews (Methodist/Wesleyan) “Adam Clarke on Hebrews 8:12: I will be merciful to their unrighteousness - In order to be their God, as mentioned under the preceding verse, it is requisite that their iniquity should be pardoned; this is provided for by the immolation of Jesus Christ as the covenant sacrifice. By his blood, redemption has been purchased, and all who with penitent hearts believe on the Lord Jesus receive remission of sins, and God remembers their iniquities no more against them so as to punish them on that account. All spiritual evil against the nature and law of God is represented here under the following ter”
  16. 1 John (Nonconformist/Puritan) “Matthew Henry on 1 John 3:4: The apostle, having alleged the believer's obligation to purity from his hope of heaven, and of communion with Christ in glory at the day of his appearance, now proceeds to fill his own mouth and the believer's mind with multiplied arguments against sin, and all communion with the impure unfruitful works of darkness. And so he reasons and argues, I. From the nature of sin and the intrinsic evil of it. It is a contrariety to the divine law: Whosoever committeth sin transgresseth also (or even) the law (or, whosoever committeth sin even committeth enormity, or aberra”
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