1 Samuel 21:14

Then Achish said to his servants, “Behold, you see the man behaving as a madman. Why do you bring him to me?

Ecclesiastes 7:7

For oppression makes a wise man mad,
And a bribe corrupts the heart.

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
For oppression makes a wise man mad,
And a bribe corrupts the heart.