Proverbs 25:15 in the World English Bible
By patience a ruler is persuaded. A soft tongue breaks the bone.
Context
14 Whoso boasteth himself of a false gift is like clouds and wind without rain.
15 By long forbearing is a prince persuaded, and a soft tongue breaketh the bone.
16 Hast thou found honey? eat so much as is sufficient for thee, lest thou be filled therewith, and vomit it.