Sirach 27:2-4

New Revised Standard Version, Anglicised Catholic Edition

² As a stake is driven firmly into a fissure between stones,
    so sin is wedged in between selling and buying.
³ If a person is not steadfast in the fear of the Lord,
    his house will be quickly overthrown.

⁴ When a sieve is shaken, the refuse appears;
    so do a person’s faults when he speaks.