נַ֣הַם כַּ֭כְּפִיר אֵ֣ימַת מֶ֑לֶךְ מִ֝תְעַבְּר֗וֹ חוֹטֵ֥א נַפְשֽׁוֹ׃
The terror of a king is as the roaring of a lion: He that provoketh him to anger forfeiteth his life.
Read midrashic interpretation of Proverbs 20:2: and classical rabbinic exegesis.