The Holy Trinity commissioned Isaiah

Isaiah 6:8-10 And I heard the voice of the Lord saying, “Whom shall I send, and who will go for us?” Then I said, “Here am I! Send me.” And he said, “Go, and say to this people: “‘Keep on hearing, but do not understand;keep on seeing, but do not perceive.’ Make the heart of this people dull, and their ears heavy, and blind their eyes;lest they see with their eyes, and hear with their ears,and understand with their hearts, and turn and be healed.”