If a stumbling block comes to you from the person dearest to you, the one as dear to you as your eyes, or even if it comes from the person who helps you the most, who is like your right hand, stay away from him.

The stumbling might come from your dearest relatives and loved ones. The majority of youth who become corrupt do so through the corruption of their very dear friends, who influence them.

—H.H. Pope Shenouda III, The Life of Repentance and Purity