Sirach 19:8LXX

6He that sinneth against his own soul, shall repent: and he that is delighted with wickedness, shall be condemned.

7Rehearse not again a wicked and harsh word, and thou shalt not fare the worse.

8Tell not thy mind to friend or foe: and if there be a sin with thee, disclose it not.

9For he will hearken to thee, and will watch thee, and as it were defending thy sin he will hate thee, and so will he be with thee always.

10Hast thou heard a word against thy neighbour? let it die within thee, trusting that it will not burst thee.