What is the difference between sin, transgression, and iniquity?
Question 6004
Scripture uses several different words to describe our moral failure before God, and each one sheds light on a different aspect of what we have done wrong. When David confessed his sin after his adultery with Bathsheba, he used all three major terms: “Blot out my transgressions. Wash me thoroughly from my iniquity, and cleanse me from my sin!” (Psalm 51:1-2). These are not simply synonyms. Each word carries its own shade of meaning, and together they paint a comprehensive picture of the human condition.
Sin: Missing the Mark
The most common word for sin in the Old Testament is חַטָּאת (chatta’th), and in the New Testament it is ἁμαρτία (hamartia). Both carry the fundamental idea of missing a target or falling short of a standard. An archer aims at the bullseye but his arrow falls wide. That is the picture.
This word reminds us that God has a standard, and we have failed to reach it. “For all have sinned and fall short of the glory of God” (Romans 3:23). The glory of God, His perfect moral excellence, is the target. And every one of us, without exception, has missed it. Not by a little, but by a mile. We may comfort ourselves by comparing ourselves to others, but measured against God’s perfection, we all fall tragically short.
Sin in this sense includes not only the bad things we do but the good things we fail to do. “So whoever knows the right thing to do and fails to do it, for him it is sin” (James 4:17). We sin by commission, doing what we ought not. We sin by omission, failing to do what we ought. Either way, we miss the mark.
Transgression: Crossing the Line
The Hebrew word פֶּשַׁע (pesha) and the Greek παράβασις (parabasis) are translated as transgression, and they carry a more deliberate connotation. A transgression is a trespass, a crossing of a boundary, a wilful stepping over a line that has been clearly drawn. If sin emphasises falling short, transgression emphasises crossing over.
Imagine a sign that says “No Trespassing” or a fence marking a property line. To transgress is to see the boundary and deliberately step across it anyway. This is why Paul writes, “Where there is no law there is no transgression” (Romans 4:15). Transgression implies a known law that has been violated. Adam’s sin in the Garden was a transgression in this sense: God had given a clear command, and Adam knowingly disobeyed it.
This word carries the weight of rebellion. It is not merely weakness or ignorance but wilful defiance. When we transgress, we are not just missing the target; we are trampling on God’s authority, asserting our will over His.
Iniquity: Inner Crookedness
The Hebrew word עָוֹן (avon) and the Greek ἀνομία (anomia) are often translated as iniquity, and they point to something twisted or crooked in our nature. If sin is what we fail to do, and transgression is what we deliberately do wrong, iniquity speaks to who we are. It refers to the perversion, the crookedness, the moral distortion that lies at the root of our actions.
This word also carries the sense of guilt and its consequences. When Cain murdered Abel, he said, “My punishment is greater than I can bear” (Genesis 4:13), but the Hebrew word there is avon, his iniquity. The word encompasses both the twisted act and the guilt it produces.
Isaiah uses this word powerfully: “All we like sheep have gone astray; we have turned, every one, to his own way; and the LORD has laid on him the iniquity of us all” (Isaiah 53:6). Our crookedness, our moral distortion, our accumulated guilt, all of it was placed on Jesus at the cross.
Why These Distinctions Matter
Understanding these three terms helps us see the full scope of our problem before God. We miss His standard. We rebel against His authority. We are twisted at the core of our being. Sin is not just about individual acts; it is about a comprehensive corruption that affects everything we are and do.
But here is the glory of the Gospel: Jesus deals with all of it. He lived the perfect life we could never live, hitting the mark at every point. He bore the penalty for our rebellious transgressions. He takes our crooked hearts and makes them new. “If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness” (1 John 1:9). All unrighteousness. Every shade of it. Every variety. Nothing is beyond His cleansing power.
“Blessed is the one whose transgression is forgiven, whose sin is covered. Blessed is the man against whom the LORD counts no iniquity, and in whose spirit there is no deceit.” Psalm 32:1-2
