No other prophetic book rivals Isaiah's clear message, powerful imagery and confident hope in God's future deliverance.

His vision of God's glory and holiness in chapter 6 permeates the whole book, and he never tires of correcting misplaced faith in power or false gods. While many scholars divide the book with the gap of about 150 years between chapters 39 and 40, Wegner highlights the unified message of the book with its three Introductions (Isa. 1:1; 2:1; 13:1) paired with its three refrains (Isa. 48:22; 57:21; 66:24): the whole book illuminates God's glorious plan for his people.

The Tyndale Commentaries are designed to help the reader of the Bible understand what the text says and what it means. The Introduction to each book gives a concise but thorough treatment of its authorship, date, original setting, and purpose. Following a structural Analysis, the Commentary takes the book section by section, drawing out its main themes, and also comments on individual verses and problems of interpretation. Additional Notes provide fuller discussion of particular difficulties.

In the new Old Testament volumes, the commentary on each section of the text is structured under three headings: Context, Comment, and Meaning. The goal is to explain the true meaning of the Bible and make its message plain.