2 Corinthians 5:13 For whether we be beside ourselves, it is to God: or whether we be sober, it is for your cause.

The zeal of the Apostle Paul and his mission team was misconstrued, they were branded falsely as being insane. Their zealousness was for the service of God and for the well-being of the believers in Corinth. They were passionate and fully devoted to the cause of God. This is not the first instance that he was charged with madness, Festus said the same in Acts 26:24 And as he thus spake for himself, Festus said with a loud voice, Paul, thou art beside thyself; much learning doth make thee mad.