Timothy J. Keller was an influential American pastor, theologian, and author renowned for his insightful approach to Christianity. Born in 1950, he founded Redeemer Presbyterian Church in New York City, which grew significantly under his leadership. Keller was celebrated for his effective communication of the Christian gospel in a modern, urban context. He authored numerous bestselling books, including "The Reason for God" and "The Prodigal God," which have been pivotal in evangelical circles and beyond. His work focused on engaging Christian orthodoxy with contemporary culture. Keller passed away in 2023, leaving a lasting impact on Christian thought and practice.