The parts:
I. An Exhortation to constancy and progress in faith and the study of piety, chapter 1.
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II. A Prophecy concerning false teachers, and mockers, chapters 2;3.
1. Prophecy concerning false teachers and impious men, chapter 2.
2. Concerning mockers of the coming of the Lord, chapter 3.
A New Testament Introduction! www.fromreformationtoreformation.com/new-testament-survey