'Insane' in the Bible

You will go insane from seeing all this.

He altered his behavior in their presence. Since he was in their power, he pretended to be insane, making marks on the doors of the gate and letting his saliva run down his beard.

Written by David, when he pretended to be insane before Abimelech, causing the king to send him away. I will praise the Lord at all times; my mouth will continually praise him.

When they have drunk it, they will stagger to and fro and act insane. For I will send wars sweeping through them."

As Paul was saying these things in his defense, Festus exclaimed loudly, "You have lost your mind, Paul! Your great learning is driving you insane!"