No Power akin to the Souls could deliver them without being overwhelmed.

Because that other Power (of Good) comes and is not confused, it is clear that it is not of the same nature as these Souls which are stifled. And instead of these Souls coming who struggled with the Evil, why at the first did not that Power come whose nature cannot be overwhelmed by 'the Floods of Evil'? But if that Power is found to be of the same nature as those Souls that are overwhelmed, it is evident without dispute that by means of that Foulness which 'intoxicated' them he who comes is perturbed.