2 Corinthians 5:13

For whether we are beside ourselves, it is unto God; or whether we are of sober mind, it is unto you.

It is difficult to know exactly what Paul was saying in this.

Whether we are beside ourselves ... This could be a hint of criticism directed against Paul by the false teachers. A governor called Paul "mad" (Acts 26:24); and even the Saviour was accused of being "beside himself" (Mark 3:21). In any case, all that Paul did was "unto God" and "unto" the Corinthians, for their sake.