Isaiah 9:6
4 For their oppressive yoke and the club that strikes their shoulders, the cudgel the oppressor uses on them, you have shattered, as in the day of Midian’s defeat. 5 Indeed every boot that marches and shakes the earth and every garment dragged through blood is used as fuel for the fire. 6 For a child has been born to us, a son has been given to us. He shoulders responsibility and is called Wonderful Adviser, Mighty God, Everlasting Father, Prince of Peace. 7 His dominion will be vast, and he will bring immeasurable prosperity. He will rule on David’s throne and over David’s kingdom, establishing it and strengthening it by promoting justice and fairness, from this time forward and forevermore. The zeal of the Lord of Heaven’s Armies will accomplish this. 8 The Lord decreed judgment on Jacob, and it fell on Israel.
LXX Isaiah 9:6
4 because the yoke placed on them will be taken away, and the rod that is on their neck; for the Lord has scattered the rod of the exactors as on the day that was upon Madiam, 5 because with reconciliation they shall repay every garment and cloak acquired by deceit, and they will be willing to do so even if they have been burned by fire, 6 because a child was born for us, a son also given to us, whose sovereignty was upon his shoulder, and he is named Messenger of Great Counsel, for I will bring peace upon the rulers, peace and health to him. 7 His sovereignty is great, and his peace has no boundary upon the throne of Dauid and his kingdom, to make it prosper and to uphold it with righteousness and with judgment from this time onward and forevermore. The zeal of the Lord Sabaoth will do these things. 8 The Lord sent death against Iakob, and it came on Israel,
Notes and References
"... In stark contrast to the Masoretic text and 1QIsaa, the LXX only ascribes one name to the son: Μεγάλης βουλῆς ἄγγελος (“Messenger of Great Counsel” or “Angel of Great Counsel”) (Isaiah 9:5). The son’s rule will be great and peaceful (Isaiah 9:7). David’s kingdom will be established with justice and righteousness forevermore (Isaiah 9:7). God will work through the Davidic son’s reign (Isaiah 9:7) ..."
Winchester, Christopher Thematic Association in the Gospel of Matthew: Situating Exegesis in the Gospel of Matthew in its Second Temple Context (p. 230) University of Edinburgh, 2017