The book of Isaiah can be called “a Bible in miniature.” There are sixty-six chapters in Isaiah and sixty-six books in the Bible. The thirty-nine chapters of the first part of Isaiah may be compared to the Old Testament with its thirty-nine books, and both focus primarily on God’s judgment of sin. The twentyseven chapters of the second part may be seen to parallel the twenty-seven books of the New Testament, and both emphasize the grace of God.
The “New Testament” section of Isaiah opens with the ministry of John the Baptist (40:3–5; Mark 1:1–4) and closes with the new heavens and the new earth (Isa. 65:17; 66:22), and in between there are many references to the Lord Jesus Christ as Savior and King. Of course, the chapter divisions in Isaiah are not a part of the original inspired text, but the comparison is still interesting.
In the “New Testament” section of Isaiah, the prophet is particularly addressing a future generation of Jews. In chapters 1—39 his audience was his own generation, and his primary message was that God would defend Jerusalem and defeat the Assyrian invaders. But in chapters 40—66 the prophet looks far ahead and sees Babylon destroying Jerusalem and the Jews going into captivity. (This happened in 586 BC) But he also saw God forgiving His people, delivering them from captivity, and taking them back to Jerusalem to rebuild the temple and restore the nation.
The primary world figure in Isaiah 1—39 is Sennacherib, king of Assyria; but in chapters 40—66 the world leader is Cyrus, king of Persia. It was Cyrus who defeated the Babylonians, and in 541 BC issued the decree that permitted the Jews to return to their land to rebuild the city and the temple (Ezra. 1:1–4). When Isaiah wrote these messages, Babylon was not yet a great world power, but the prophet was inspired by God to see the course the international scene would take.
Chapters 40—66 may be divided into three parts (40—48; 49—57; and 58—66), with the same statement separating the first two sections: “There is no peace, saith the Lord, unto the wicked” (48:22; 57:21). Chapters 40—48 emphasize the greatness of God the Father in contrast to the vanity of the heathen idols. Chapters 49—57 extol the graciousness of God the Son, the Suffering Servant; and chapters 58—66 describe the glory of God in the future kingdom, and the emphasis is on the work of the Holy Spirit (59:19, 21; 61:1ff.; 63:10–11, 14). Thus, there seems to be a trinitarian structure to these chapters.
The heart of Isaiah 40—66 is chapters 49—57, in which Isaiah exalts the Messiah, God’s Suffering Servant. And the heart of chapters 49—57 is 52:13— 53:12, the description of the Savior’s substitutionary death for the sins of the world. This is the fourth of the “Servant Songs” in Isaiah; the others are 42:1–7; 49:1–6; and 50:1–11. So at the heart of the “New Testament” section of Isaiah’s book is our Lord Jesus Christ and His sacrifice on the cross for our sins. No wonder Isaiah has been called “the evangelical prophet.”
The Jewish rabbis have called Isaiah 40—66 “The Book of Consolation,” and they are right. Isaiah sought to comfort the Jewish remnant in Babylon, after their difficult years of captivity, and to assure them that God was with them and would take them safely home. Along with words of consolation, the prophet also revealed the Messiah, God’s Suffering Servant, and described the future regathering of Israel and the promised kingdom. Isaiah saw in Israel’s restoration from Babylon a preview of what God would do for them at the end of the age, after the “day of the Lord” and the destruction of the world’s last “Babylon” (Rev. 17—19).
So as you study Isaiah 40—66, keep in mind that it was originally addressed to a group of discouraged Jewish refugees who faced a long journey home and a difficult task when they got there. Note how often God says to them, “Fear not!” and how frequently He assures them of His pardon and His presence. It is no surprise that God’s people for centuries have turned to these chapters to find assurance and encouragement in the difficult days of life; for in these messages, God says to all of His people, “Be comforted!”