3 John 1:10 Therefore, if I come, I will call attention to his deeds which he does, unjustly accusing us with wicked words. Not content with this, neither does he himself receive the brothers, and those who would, he forbids and throws out of the assembly. (See NIV)
Proverbs 20:19 He who goes about talking of the business of others gives away secrets: so have nothing to do with him whose lips are open wide. (See RSV)