The life of God in the Soul of man
I have reviewed this book before and I can't say enough good things about it, that's why I continue to buy a copies, somewhere around 50 and giving them away to everyone, encourage you to do likewise.
A Modernized Version of The Life of God In the Soul of Man is a Puritan classic made accessible for the rest of us.
"I never knew what true religion was till God sent me this excellent treaties." —George Whitefield
“Few books have been as useful as Scougal’s classic to awaken people from external religion to seek a living, loving, lasting relationship with God through Jesus Christ. By God’s grace, this is a reviving book, and may God use this modernized edition to revive many people in our needy day.” —Joel R. Beeke