Cross reference
Ecclesiastes 10:3
3 And when the foolish man is walking in the way, he has no sense and lets everyone see that he is foolish.
Proverbs 13:16
16 A sharp man does everything with knowledge, but a foolish man makes clear his foolish thoughts.
Proverbs 18:2
2 A foolish man has no pleasure in good sense, but only to let what is in his heart come to light.
Proverbs 18:6
6 A foolish man's lips are a cause of fighting, and his mouth makes him open to blows.
Ecclesiastes 5:3
3 When you take an oath before God, put it quickly into effect, because he has no pleasure in the foolish; keep the oath you have taken.
1 Peter 4:4
4 And they are wondering that you no longer go with them in this violent wasting of life, and are saying evil things of you: