What is the difference between sin, transgression, and iniquity in the Old Testament?
Question 06070
The Old Testament does not use a single word for sin. It uses a rich vocabulary of overlapping terms that together paint a more complete picture of what sin actually is than any single word could capture. Three of those terms recur throughout the Hebrew Scriptures — and significantly, they appear together in some of the most theologically loaded passages in all of Scripture. Understanding what each contributes changes the way you read those texts.
Chata — Missing the Mark
The most common Hebrew word for sin is chata (חָטָא), along with its noun form chatta’ah (חַטָּאת). The root meaning is to miss, to fall short, to fail to reach the intended target. The same verb appears in Judges 20:16, where seven hundred left-handed Benjaminite slingers could sling a stone at a hair and not miss — the very word for sin is used there to describe an archer who fails to hit his mark.
What this word emphasises is the gap between what is and what ought to be — the falling short of God’s standard. It is the most neutral of the three terms in this respect, describing the fact of sin’s failure without necessarily specifying its motivation. It can describe an unintentional violation as well as a deliberate one, which is why the Mosaic law includes provisions for sins of ignorance committed through chata.
Pesha — Deliberate Rebellion
Pesha (פֶּשַׁע) carries a very different weight. It is used in political contexts to describe revolt or rebellion against an authority — 1 Kings 12:19 uses it of Israel’s rebellion against the house of David. When applied to sin, it carries the sense of wilful, knowing defiance — not missing the mark through weakness or ignorance but deliberately crossing a boundary that one knows to be there. It is the posture of the creature who looks at God’s command and says no.
This is why pesha is often translated “transgression” — the image is of stepping across a line that was clearly drawn. It carries the connotation of autonomy, of the human will asserting itself against the divine will. Many of the prophetic indictments of Israel use this word, because what the prophets are describing is not merely a people who have fallen short but a people in active, ongoing rebellion against the covenant God who redeemed them.
Avon — Twisted Iniquity
Avon (עָוֹן) comes from a root meaning to bend, to twist, to be crooked. It carries the sense of the perversity or distortion that sin introduces — not the act itself primarily but the bent, warped nature that produces it and the guilt that accumulates through it. It is the word that captures something of what theology calls the sin nature: the twistedness in the human heart that is not a series of wrong choices alone but a fundamental distortion of what God made us to be.
When avon appears, the focus is often on the inner condition that produces outward behaviour, and on the guilt and consequences that weigh upon the one who carries it. Isaiah 53:6 uses it: “the LORD has laid on him the iniquity of us all” — not a list of acts but the whole bent orientation of human rebellion and its accumulated guilt, placed upon the Servant.
The Three Together in Psalm 32 and Psalm 51
What makes these distinctions so striking is that David deliberately uses all three in both Psalm 32 and Psalm 51, and the placement appears intentional. Psalm 32:1-2: “Blessed is the one whose transgression (pesha) is forgiven, whose sin (chatta’ah) is covered. Blessed is the man against whom the LORD counts no iniquity (avon).” Psalm 51:1-3 does the same: “Have mercy on me, O God… blot out my transgressions (pesha). Wash me thoroughly from my iniquity (avon), and cleanse me from my sin (chatta’ah).”
The comprehensiveness is the point. David is not being redundant. He is saying: whatever dimension of my failure you look at — the fact that I fell short, the fact that I wilfully rebelled, the fact that there is a twisted corruption at the root of it all — deal with all of it. The prayer is total. The forgiveness sought covers every angle from which sin can be understood.
New Testament Parallels
The New Testament Greek vocabulary maps onto similar territory. Hamartia (ἁμαρτία) corresponds broadly to chata — it is the most common word for sin and carries the sense of missing the mark. Parabasis (παράβασις) corresponds to pesha — it is the word for stepping over a line, transgression in the technical sense, and Paul uses it specifically in contexts where a known law has been violated (Romans 4:15; 5:14). Anomia (ἀνομία), often translated “lawlessness” or “iniquity,” picks up something of the sense of avon — the spirit of disregard for God’s order that characterises not just individual acts but an orientation of the heart.
So, now what?
This vocabulary matters pastorally because sin is not a single, flat category that one word exhausts. It is missing the mark, wilful rebellion, and deep-seated corruption — often all present simultaneously in a single act. When David confessed after his adultery and murder, he was not dealing with a moment of weakness but with all three dimensions at once. Understanding this shapes honest prayer and honest repentance: it guards against the minimising tendency that frames sin as a mistake rather than rebellion, and equally against the despair that feels crushed by the weight of inner corruption without grasping that God’s forgiveness addresses every dimension of it.
“Blessed is the one whose transgression is forgiven, whose sin is covered. Blessed is the man against whom the LORD counts no iniquity.” Psalm 32:1-2
