Yeshayah 6:8-10

Orthodox Jewish Bible

⁸ Also I heard the voice of Adonoi, saying, Whom shall I send, and who will go for Us? Then said I, Hineini; send me.

⁹ And He said, Go, and tell this people, Hear ye indeed, but understand not; and see indeed, but perceive not.

¹⁰ Make the lev HaAm hazeh stubborn, and make their ears stopped up, their eyes heavy; lest they see with their eyes, and hear with their ears, and understand with their lev. And have a spiritual turnaround conversion, and be healed.