LXX Isaiah 6:10
8 Then I heard the voice of the Lord saying, “Whom should I send, and who will go to this people?” And I said, “Here am I; send me!” 9 And he said, “Go, and say to this people: ‘You will listen by listening, but you will not understand, and looking you will look, but you will not perceive.’ 10 For this people’s heart has grown fat, and with their ears they have heard heavily, and they have shut their eyes so that they might not see with their eyes and hear with their ears and understand with their heart and turn—and I would heal them.” 11 Then I said, “How long, O Lord?” And he said: “Until cities become desolate, because they are not inhabited, and houses, because there are no people, and the land will be left desolate. 12 And after these things, God will send people far away, and those who have been left will be multiplied on the land.
Acts 28:27
25 So they began to leave, unable to agree among themselves, after Paul made one last statement: “The Holy Spirit spoke rightly to your ancestors through the prophet Isaiah 26 when he said,‘Go to this people and say,“You will keep on hearing, but will never understand, and you will keep on looking, but will never perceive. 27 For the heart of this people has become dull, and their ears are hard of hearing, and they have closed their eyes, so that they would not see with their eyes and hear with their ears and understand with their heart and turn, and I would heal them.”’ 28 “Therefore be advised that this salvation from God has been sent to the Gentiles; they will listen!” 29 Paul lived there two whole years in his own rented quarters and welcomed all who came to him,
Notes and References
"... Like LXX Psalms, LXX Isaiah had a great impact on the New Testament. LXX Isaiah 6:9-10, for example, which softens the shock of the Hebrew, is put to apologetic use in Acts 28:27. The so-called 'Servant Songs', which Christian writers apply to Christ, are given a collective sense in the LXX ..."
Dines, Jennifer M. The Septuagint (p. 22) T&T Clark, 2004