It should seem, that some amongst the Corinthians, amongst other reproaches, had reproached Paul for a madman; either taking advantage of the warmth and fervour of his spirit, or of those ecstasies in which he sometimes was; or of his speaking things which they could not apprehend and understand: as the Roman governor, in the Acts, told him: Much learning hath made thee mad. The apostle tells them, that if indeed he was beside himself in any of their opinion, it was to God, that is, for the honour and glory of God: or if he was sober, it was for their sake; in what temper soever he was, it was either for service to God, or them.
Related Commentaries of 2 Corinthians 5:13
2 Corinthians 5:13
13 For whether we be beside ourselves, it is to God: or whether we be sober, it is for your cause.