Sirach 27:14-16

Revised Standard Version Catholic Edition

¹⁴ The talk of men given to swearing makes one’s hair stand on end,
    and their quarrels make a man stop his ears.
¹⁵ The strife of the proud leads to bloodshed,
    and their abuse is grievous to hear.

¹⁶ Whoever betrays secrets destroys confidence,
    and he will never find a congenial friend.