1 Samuel 21:14

Then said Achish unto his servants, - Lo! ye can see, a madman playing his pranks, wherefore should ye bring him in, unto me?

Ecclesiastes 7:7

For, oppression, maddeneth the wise, - and a bribe, destroyeth 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
For, oppression, maddeneth the wise, - and a bribe, destroyeth the understanding.