BIBLE CHAPTER STUDY
Sirach 21 — Sin, Wisdom, and Foolishness Contrasted
Chapter 21 warns against sin, contrasts the prayer of the poor with the violence of the proud, and sets wise speech and disciplined learning over against foolish noise.
Scripture
1Various Sins Have you sinned, my son? Do so no more, but pray about your former sins.
2Flee from sin as from a snake; for if you approach sin, it will bite you. Its teeth are lion’s teeth, and destroy the souls of men.
3All lawlessness is like a two-edged sword; there is no healing for its wound.
4Terror and violence will lay waste riches; thus the house of the proud will be laid waste.
5The prayer of a poor man goes from his lips to the ears of God, and his judgment comes speedily.
6Whoever hates reproof walks in the steps of the sinner, but he that fears the Lord will repent in his heart.
7He who is mighty in speech is known from afar; but the sensible man, when he slips, is aware of it.
8A man who builds his house with other people’s money is like one who gathers stones for his burial mound.
9An assembly of the wicked is like tow gathered together, and their end is a flame of fire.
10The way of sinners is smoothly paved with stones, but at its end is the pit of Hades.
11Wisdom and Foolishness Whoever keeps the law controls his thoughts, and wisdom is the fulfilment of the fear of the Lord.
12He who is not clever cannot be taught, but there is a cleverness which increases bitterness.
13The knowledge of a wise man will increase like a flood, and his counsel like a flowing spring.
14The mind of a fool is like a broken jar; it will hold no knowledge.
15When a man of understanding hears a wise saying, he will praise it and add to it; when a reveler hears it, he dislikes it and casts it behind his back.
16A fool’s narration is like a burden on a journey, but delight will be found in the speech of the intelligent.
17The utterance of a sensible man will be sought in the assembly, and they will ponder his words in their minds.
18Like a house that has vanished, so is wisdom to a fool; and the knowledge of the ignorant is unexamined talk.
19To a senseless man education is fetters on his feet, and like manacles on his right hand.
20A fool raises his voice when he laughs, but a clever man smiles quietly.
21To a sensible man education is like a golden ornament, and like a bracelet on the right arm.
22The foot of a fool rushes into a house, but a man of experience stands respectfully before it.
23A boor peers into the house from the door, but a cultivated man remains outside.
24It is ill-mannered for a man to listen at a door, and a discreet man is grieved by the disgrace.
25The lips of strangers will speak of these things, but the words of the prudent will be weighed in the balance.
26The mind of fools is in their mouth, but the mouth of wise men is in their mind.
27When an ungodly man curses his adversary, he curses his own soul.
28A whisperer defiles his own soul and is hated in his neighborhood.
What this passage means
The opening section (vv. 1–10) presents sin as a predatory creature: a snake whose bite kills, a two-edged sword with no cure, and a smooth path that ends in the pit of Hades. The remedy is concrete — stop sinning, pray over past offenses, and reject the proud pursuit of violence. Even the poor are heard, because their prayer reaches God's ears and brings swift judgment, while the houses of the proud are laid waste.
The second section (vv. 11–17) defines wisdom not as raw cleverness but as the fulfillment of fearing the Lord and keeping the law. A wise man's knowledge rises like a flood and is sought in the assembly; a fool's mind is a broken jar that holds nothing. Speech marks the difference: the sensible ponder their words, while the fool treats wise sayings as a burden to be discarded.
The closing section (vv. 18–28) extends the contrast to manners and self-control. Education is a golden ornament to the wise but fetters to the fool; a fool rushes in and peers through doors, while a cultured man waits respectfully. The chapter ends with an interior contrast — the fool's mind is in his mouth, but the wise man's mouth is in his mind — and with a warning that cursers and whisperers defile themselves.
Context
The curated note identifies chapter 21 as part of the backfilled material from Sirach outside the P0/P1 priority range. No surrounding chapters were provided, so the comparison stays within this chapter's own movement from sin (vv. 1–10) to wisdom and folly (vv. 11–28). No cross references were supplied for this chapter, so no external parallels are cited.
Common questions
Why does the chapter open with sin imagery of snakes and swords?
The chapter uses vivid, physical metaphors — a biting snake, lion's teeth, a two-edged sword, a burial mound of stones, tow set ablaze — to show that sin is self-destructive and contagious. The point is not literary decoration but warning: sin acts on the sinner like a predator or weapon, and only stopping and praying provides relief (vv. 1–9).
What does 'wisdom is the fulfilment of the fear of the Lord' mean here?
Sirach links wisdom directly to the fear of the Lord and the keeping of the law rather than to innate cleverness (v. 11). The rest of the chapter illustrates this: wise speech is measured and sought in the assembly, while foolish speech is hasty, loud, and self-defeating (vv. 15–17, 20, 26). Wisdom, in short, is shaped obedience expressed in disciplined words and actions.
Is the chapter's view of the poor (v. 5) consistent with its view of the proud (v. 4)?
Yes. Verse 4 says terror and violence lay waste the house of the proud, while verse 5 says the prayer of the poor reaches God's ears and brings swift judgment. The two verses together form a deliberate reversal: human power and intimidation collapse, but the cry of the powerless is heard. The contrast is rhetorical and thematic, not a full social program, so the chapter should be read as moral instruction rather than a policy blueprint.