Sirach 11:7

7 Blame not before thou hast examined the truth: understand first, and then rebuke.

Sirach 11:7 In-Context

5 Many kings have sat down upon the ground; and one that was never thought of hath worn the crown.
6 Many mighty men have been greatly disgraced; and the honourable delivered into other men's hands.
7 Blame not before thou hast examined the truth: understand first, and then rebuke.
8 Answer not before thou hast heard the cause: neither interrupt men in the midst of their talk.
9 Strive not in a matter that concerneth thee not; and sit not in judgment with sinners.

The Brenton translation of the Septuagint is in the public domain.