1 Samuel 21:14

Then Achish said to his servants, "Look, you see the man is mad. Why then have you brought him to me?

Ecclesiastes 7:7

Surely extortion makes the wise man foolish; and a bribe destroys the understanding.

Treasury of Scripture Knowledge

Summary

Then said Achish unto his servants, Lo, ye see the man is mad: wherefore then have ye brought him to me?

Bible References

Is mad

Ecclesiastes 7:7
Surely extortion makes the wise man foolish; and a bribe destroys the understanding.