Acts 28:23-27

23They arranged to meet Paul on a certain day, and came in even larger numbers to the place where he was staying. He witnessed to them from morning till evening, explaining about the kingdom of God, and from the Law of Moses and from the Prophets he tried to persuade them about Jesus. 24Some were convinced by what he said, but others would not believe.

25They disagreed among themselves and began to leave after Paul had made this final statement: “The Holy Spirit spoke the truth to your ancestors when he said through Isaiah the prophet:

26“ ‘Go to this people and say, “You will be ever hearing but never understanding; you will be ever seeing but never perceiving.”

27For this people’s heart has become calloused; they hardly hear with their ears, and they have closed their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts and turn, and I would heal them.’ Isaiah 6:9,10 (see Septuagint)