'Unbalanced' in the Bible

Are there not enough unbalanced men about me, that you have let this person come and do such tricks before me? is such a man to come into my house?

And when he made his answer in these words, Festus said in a loud voice, Paul, you are off your head; your great learning has made you unbalanced.

If, then, the church has come together, and all are using tongues, and there come in men without knowledge or faith, will they not say that you are unbalanced?