Proverbs 25:15 - Joseph Benson’s Commentary on the Old and New Testaments

By long forbearing is a prince persuaded That is, by patient submission and expectation he is pacified, whereas his rage is increased by opposition. And a soft tongue breaketh the bone A mild and humble answer softens a heart which is as hard as a bone or stone. He alludes to those oils which sink through the flesh to the very bone: see Psalms 109:18.