Sirach 19:8-10

Revised Standard Version

⁸ With friend or foe do not report it,
    and unless it would be a sin for you, do not disclose it;
⁹ for some one has heard you and watched you,
    and when the time comes he will hate you.
¹⁰ Have you heard a word? Let it die with you.
    Be brave! It will not make you burst!