בְּשִׂפְתֵ֣י נָ֭בוֹן תִּמָּצֵ֣א חָכְמָ֑ה וְ֝שֵׁ֗בֶט לְגֵ֣ו חֲסַר־לֵֽב׃
명철한 자의 입술에는 지혜가 있어도 지혜없는 자의 등을 위하여는 채찍이 있느니라
Rashi
Wisdom is found in the lips of the understanding When a person reproves an understanding individual, he replies to him, “I have sinned,” e.g. David, who said to Nathan, “I have sinned” (11 Sam. 12:13).
Rashi
but a rod is for the body of one devoid of sense But one who is devoid of sense does not listen until he is smitten, like Pharaoh.