This classic work by William Guthrie helps readers examine whether they truly belong to Christ, offering pastoral clarity and gospel hope to those seeking assurance of salvation and the marks of true saving faith.

First published in the 17th century, The Christian’s Great Interest addresses two essential questions: What does it mean to be in Christ? And how can I know that I am His? Guthrie speaks with theological precision and deep pastoral care, making the doctrine of assurance accessible and deeply comforting.

Rooted in Scripture and full of spiritual insight, this book guides believers through self-examination, pointing constantly to Christ as the foundation of hope. It remains one of the most warmly recommended devotional works by the Scottish Puritans.

This edition includes updated language while preserving Guthrie’s original intent and tone, making it ideal for personal reading, discipleship, or counseling those struggling with doubt.

Key Features:

• Classic work on assurance of salvation

• Deeply pastoral and Christ-centered

• Clear guidance for self-examination and faith

• Updated for modern readers

• Endorsed by generations of Reformed pastors and theologians