Book of Isaiah
The Book of Isaiah is the most prophetic book in history, the largest (in terms of size, having 66 chapters) and one of the most widely read. Its authenticity was confirmed by the discovery of the Dead Sea Scrolls.
It is part of the Old Testament dating to the eighth century BC. It is organized into two sections of prophetic discourse (1-33 and 34-66) divided by a historical record. The most remarkable feature of the book is its prophetic utterances about the “servant of the Lord”. Classical Jewish sources (e.g., Rashi) consider the servant to be the Jewish nation taken as a collective, while Christian scholars tend to identify the servant as Jesus Christ.
The end of Isaiah 52 and Isaiah 53, the "suffering servant" section, is considered to be one of the most forthright references to Jesus found in the Old Testament. It is quoted more frequently in the New Testament than any other Old Testament passage and is often referred to as the "Gospel in the OT".
Embrace of Logic
The Book of Isaiah embraces logic expressly in Isaiah 1:18:
Come now, and let us reason together," Says the LORD, "Though your sins are as scarlet, They will be as white as snow; Though they are red like crimson, They will be like wool. Isaiah 1:18 (NASB)
and again in Isaiah 43:26:
Put Me in remembrance, let us argue our case together; State your cause, that you may be proved right. Isaiah 43:26 (NASB)
- The NIV Study Bible, Zondervan Corporation, 1985, Pg. 1094