Discover the enduring relevance of Gerhart’s Institutes, conceived during the aftermath of the American Civil War and Reconstruction. In a time of denominational fragmentation, Gerhart offered a Reformed theological foundation aimed at fostering Christian unity through Mercersburg theology. His forward-thinking approach ran counter to the revivalist trends of the time, which, much like today, often focused on emotional worship and short-term enthusiasm rather than long-term growth in Christ. In 2023, as churches again grapple with revivalism's limitations, Gerhart’s insights serve as a reminder of the need for deeper sanctification, spiritual maturity, and lasting faithfulness beyond the cycles of revival.