Isaiah 53:8. By oppression and judgment He was taken away. Now he begins to treat His glorification. Behold, here he declares that He whom he had until now depicted as a sheep to be killed and whom he had described as destined for a most shameful death for the sins of others is to be raised again. Now he describes Him again. He is not dead but taken away from oppression. Here he says that His oppression and judgment is finished. This cannot be said of a dead person remaining in the grave, but it can be said of one liberated and revived. The text says that He was oppressed and in judgment but has now been removed from them, hence resurrected.
As for His generation, who will tell it? Who can relate its duration, since His life and duration is eternal? Note the two contrary statements: Someone dying and yet enduring forever. Generation properly means age, era, a lifetime. it is a proverbial statement that “a generation goes, and a generation comes, but the earth remains forever” (Eccl. 1:4). This must be understood as referring not to generation but to age. Here, then, the prophet established Christ in an eternal age, something that cannot be expressed, namely, that He has been transposed into eternal life. Peter expounds this passage in Acts, where he says (Acts 2:24): “God raised Him up, having loosed the pangs of death, because it was not possible for Him to be held by it,” and led Him into generation, that is, into length of life and eternity. Christ has such length of life that it cannot be expressed. Unless we believe it by faith, eternity is beyond expression. (Luther’s Works, v. 17, pages 226-227).