Theophylact of Bulgaria
This, he says, was done by people who stopped their ears and closed their eyes. "Lest they should turn, and I should heal them." This points to the strong impiety and stubborn aversion of these people. It is said in order to draw and incline them, and to show that if they turn, they will be healed. "For the heart of this people has grown dull." This is not said as though God, "who desires all men to be saved and to come to the knowledge of the truth" (1 Tim 2:4), helps to keep them from seeing. Nor is it as though He is zealous that they should not hear. Rather, we are accustomed to speak this way about people who withdraw and do not wish to hear the word of salvation. Such a person flees and turns away his ears, lest somehow he hear the word that could turn him back and restrain him from evil.