Theology I: Doctrine of Sin (part 1)
The Nature of Sin | Sin, Iniquity, and Transgression Explained
In this theology lecture at Cedarville University, students examine the nature of sin and why Scripture uses multiple words to describe humanity’s rebellion against God. By exploring sin, iniquity, and transgression, this session clarifies how wrongdoing affects our relationship with God, with others, and within our own hearts. Understanding sin rightly is essential to understanding the gospel, because only when we grasp the depth of our brokenness can we fully appreciate the grace and mercy offered through Jesus Christ.
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0:19 Review of the fall in Genesis 3
0:47 Three key biblical terms for sin
1:55 Exodus 34 and God’s forgiving character
3:19 Definition of sin as missing the mark
5:02 Illustrations of falling short
7:48 Sin and human hostility toward God
9:31 Iniquity as distortion and guilt
12:10 Psalm 32 and confession
14:05 Righteousness versus iniquity
15:18 Transgression as rebellion and betrayal
16:01 Isaiah 1 and covenant breaking
18:24 God’s faithfulness despite human unfaithfulness
20:01 Sin as omission and commission
22:25 Sin as a state, not just actions
23:41 Idolatry as the essence of sin
25:58 Sources of sin: world, flesh, and devil
27:25 James 1 and personal responsibility
29:29 Loving the world versus loving God
34:40 Godward, outward, and inward results of sin
35:51 Eternal judgment and God’s wrath
40:14 Total depravity explained
41:21 The gospel hope in John 3:36
The lecture begins by revisiting Genesis 3 and the entrance of sin into the world through Adam and Eve’s rebellion. From there, it introduces three major biblical terms used to describe wrongdoing. Sin refers to missing the mark of God’s righteous standard. Iniquity describes a twisting or distortion of what is good and straight, resulting in guilt and moral corruption. Transgression goes even further, emphasizing rebellion, covenant breaking, and betrayal of a relationship with God.
Students then explore how sin is not merely about isolated bad actions, but about a deeper condition of the heart. Scripture teaches that sin includes both commission and omission, what we do wrong and what we fail to do rightly. Even religious actions like praying, giving, or fasting can be sinful if motivated by pride or self-glory rather than obedience to God.
The lecture also addresses the sources of sin. God is not the author of sin. Instead, Scripture identifies three major influences: the world, the flesh, and the devil. Satan tempts and deceives, the world promotes systems opposed to God’s truth, and the sinful nature within each person inclines the heart toward rebellion. Together, these forces explain why humanity continually falls short of God’s glory.
Finally, the results of sin are examined in three dimensions. Godward, sin brings guilt and exposure to God’s righteous judgment, including eternal consequences for those who reject the gospel. Outwardly, sin fractures human relationships, producing conflict, injustice, and oppression. Inwardly, sin deceives the mind, hardens the heart, and enslaves the will. This total corruption highlights humanity’s desperate need for salvation.
The session closes by pointing clearly to the gospel. While the wages of sin are death, eternal life is offered through faith in Jesus Christ. Only through Christ’s atoning sacrifice can sinners be forgiven, restored, and rescued from the wrath they deserve.
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