Sirach 19:13-30 New Revised Standard Version (NRSV)
13 Question a friend; perhaps he did not do it;
or if he did, so that he may not do it again.
14 Question a neighbor; perhaps he did not say it;
or if he said it, so that he may not repeat it.
15 Question a friend, for often it is slander;
so do not believe everything you hear.
16 A person may make a slip without intending it.
Who has not sinned with his tongue?
17 Question your neighbor before you threaten him;
and let the law of the Most High take its course.
True and False Wisdom
20 The whole of wisdom is fear of the Lord,
and in all wisdom there is the fulfillment of the law.
22 The knowledge of wickedness is not wisdom,
nor is there prudence in the counsel of sinners.
23 There is a cleverness that is detestable,
and there is a fool who merely lacks wisdom.
24 Better are the God-fearing who lack understanding
than the highly intelligent who transgress the law.
25 There is a cleverness that is exact but unjust,
and there are people who abuse favors to gain a verdict.
26 There is the villain bowed down in mourning,
but inwardly he is full of deceit.
27 He hides his face and pretends not to hear,
but when no one notices, he will take advantage of you.
28 Even if lack of strength keeps him from sinning,
he will nevertheless do evil when he finds the opportunity.
29 A person is known by his appearance,
and a sensible person is known when first met, face to face.
30 A person’s attire and hearty laughter,
and the way he walks, show what he is.