Acts 28:25-26 attributes Isaiah 6:10 to the prophet Isaiah.
Acts 28:25-26, New Testament, The Church of Jesus Christ of Latter Day Saints, accessed August 17, 2023
25 And when they agreed not among themselves, they departed, after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers,
26 Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive: