The terror of a king is like the growling of a lion; whoever provokes him to anger forfeits his life. 
Wisdom gives us clues about how to deal with certain leaders. Leaders have power and authority. They can destroy us if we are not careful.
Quick-tempered leaders are not looking for wisdom from us. They want to do what they want they want to do. Getting in their way can only lead to harm to us.
This is tough to learn. There have been occasions I wished I had been wiser.
The king’s wrath is here likened to a lion’s roar. The wise take warning, but fools provoke it and pay with their lives (lit., “sins against his soul,” ḥoṭeh napšo).
God’s goal: God wants us to be wise. That wisdom understands the dynamics of authority. We should always respect those in authority and not provoke them to anger. Nothing good is going to come from that.
 The Holy Bible: English Standard Version. (2016). (Pr 20:2). Wheaton, IL: Crossway Bibles.
 Koptak, P. E. (2003). Proverbs (p. 483). Grand Rapids, MI: Zondervan.