Sirach 13:10-12

Revised Standard Version Catholic Edition

¹⁰ Do not push forward, lest you be repulsed;
    and do not remain at a distance, lest you be forgotten.
¹¹ Do not try to treat him as an equal,
    nor trust his abundance of words;
for he will test you through much talk,
    and while he smiles he will be examining you.
¹² Cruel is he who does not keep words to himself;
    he will not hesitate to injure or to imprison.