Proverbs 11:13 - Matthew Poole's English Annotations on the Holy Bible

A tale-bearer, or, he that goeth about (from one place or person to another, as the manner of such is) telling tales, making it his business to scatter reports, revealeth secrets; this tattling humour is so prevalent with him, that he cannot forbear to publish, either his neighbour's secret faults, or such things as were committed to his trust with a charge of secrecy. He that is of a faithful spirit, that hath a sincere, and constant, and faithful mind, which both can and will govern his tongue, concealeth the matter, so far as he can lawfully do.