Guard your ears and your mouths

Do not accept any evil words, but keep your soul clean and uncorrupt. Because if you accept the dirty words of someone who speaks against his neighbor, then your prayer will be affected by thoughts and will hate unjustifiably those who you socialize with.

So we need to be careful about what we say and what we allow others to say to us. Therefore, not only we do not say something bad against others, but also do not tolerate even to listen to something like that.

Saint Syncletike

Translated By Dr. Nick Stergiou

 http://www.orthodoxpath.org/saints-and-elders-counsels/guard-your-ears-and-your-mouths/