Mat13:15 For the heart of this people has become fat and their ears are slow in hearing and their eyes are shut; for fear that they might see with their eyes and give hearing with their ears and become wise in their hearts and be turned again to me, so that I might make them well.
Act28:28 Be certain, then, that the salvation of God is sent to the Gentiles, and they will give hearing.
Heb5:11 Of whom we have much to say which it is hard to make clear, because you are slow of hearing.