He does not say, “Ye have not understood,” but, “Ye have not believed”; for when a man is ill disposed towards those things which it is possible to apprehend by the intellect, and will not readily receive them, he may justly be charged with want of understanding; but when he receives not things which cannot be apprehended by reasoning, but only by faith, the charge against him is no longer want of understanding, but unbelief. Leading him therefore away from enquiring by reasonings into what had been said, He touches him more severely by charging him with want of faith. If now we must receive our own Generation by faith, what do they deserve who are busy with their reasonings about that of the Only-Begotten?