Psalms 73:5

"In the labours of men they are not, and with men they shall not be scourged" [Psalm 73:5]. Does not even the devil himself escape scourging with men, for whom nevertheless an eternal punishment is being prepared?

Perhaps someone may say, Why did God cause Pharaoh to be hardened by sparing him, and why did he remove his scourges? At this point I reply with assurance: God removed his scourges so often because by the immense number of his sins Pharaoh did not merit to be rebuked as a son for the amendment of his life, but like an enemy he was allowed to become hardened. Such great sins of his had preceded, and he had despised God so often with wicked boldness, that in him was fulfilled what the Holy Spirit said concerning such people: "They are free from the burdens of mortals and are not afflicted like the rest of humanity. So pride adorns them as a necklace; as a robe violence clothes them. Out of their crassness comes iniquity." Behold how a person is hardened if he does not deserve to be chastised by our Lord for his correction. Moreover, what is written concerning those whom God's mercy does not allow to become hardened? "God scourges every son whom he receives";28 furthermore, "Those whom I love I rebuke and chastise"; and again, "For whom God loves he reproves." Concerning this hardening the prophet also exclaims to the Lord in the person of the people: "Why do you harden our hearts so that we do not fear you?" Surely, this is nothing else than: You have abandoned our heart, that we should not be converted to you.

Hence we should know that the Holy Spirit has condemned those detestable people who hold such views. For what other people does he specifically condemn except the Arians, who say that the Son of God does not experience periods of time and years? For there isn't anything with which that God is not familiar. If, however, Christ is God and Christ is the highest God, then he is God above all things. Notice how outraged the blessed David was with such people who limit the Son of God's knowledge. He says, "They do not share the troubles common to human beings, and they will not be plagued like other people. They are burdened with their pride; they are clothed in iniquity and impiety. Their iniquity is proportionate with their portliness. They extend into the condition of the heart." Without a doubt he condemns those who believe that divine things must be determined from the "condition of the heart." For God is not subject to [any temporal] condition or order because these are things that are peculiar to human beings and according to succeeding generations. But we know that they do not always occur according to some formal plan but more often happen according to some secret and hidden mystery."They have thought," he says, "and they have spoken wickedly and sinfully against God. They have set their mouth against heaven." And so we see that he condemns those who are responsible for impious blasphemy and who claim for themselves the right to arrange the secrets of heaven according to the manner of human nature.