And behold, a lawyer stood up to put him to the test, saying, “Teacher, what shall I do to inherit eternal life?” He said to him, “What is written in the Law? How do you read it?” And he answered, “You shall love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind, and your neighbor as yourself.” And he said to him, “You have answered correctly; do this, and you will live.”
When I was a boy, my parents often took my sister and me on trips to various parts of the country. I well remember my mom having a roadmap opened on her lap, meticulously tracing the intersection of the nearby highways and neighborhood roads. Whether or not we would make it to our destination was dependent on how carefully my mom read the intricate details of the map. On one occasion, we were making our way through the winding roads of the Pocono Mountains. We had missed our turn somewhere along the way.
With each passing beatitude in Jesus’ Sermon on the Mount in Matthew 5, it becomes more and more clear that a person cannot be a genuine Christian without have their attitudes and actions completely and radically transformed from the inside out. Regardless the extent of your exegetical gymnastics, there is no possibility of developing a theology of salvation by works from Jesus’ teaching in Matthew 5. In fact, it is quite the opposite.
In my last letter, I wrote that the Puritans show us how to marry doctrine and practice in our preaching. I'd like to add that they stressed the practice of piety (praxis pietatis), or practical godliness, flowing out of sound doctrine—just as much as Augustine and Calvin before them.
The Westminster Directory for Worship summarizes the Puritans’ commitment to sanctified application:
In my last letter, I wrote that the Puritans show us how to shape our entire lives and preaching by the Holy Scriptures. But they also show us how to marry doctrine and practice in our preaching. They accomplished this by addressing the mind with clarity, confronting the conscience pointedly, and wooing the heart passionately. Let’s look at each of these.
Puritan preaching addressed the mind with clarity.
Alexander McLeod and His Speech Against Slavery
Olaudah Equiano – Waking Up Christians to the Evils of Slavery
Basic information – four ideas
(Rev. 1:17, 18)
Historical Collections of the Past
Walking with God