Assurance of one’s salvation is an important part of Protestant faith, and one of the many marks that sharply distinguishes it from Roman Catholicism. In the seventeenth century, however, many within Puritan circles struggled with this issue. In this lecture, Dr. Godfrey will explain this struggle. He will also spend considerable time discussing the Puritan understanding of conversion, and will show that the very idea of conversion has changed dramatically over the past few centuries.