Timothy Keller (1950-2023) was the founding pastor of Redeemer Presbyterian Church in Manhattan, which he started in 1989. For over 20 years, he led a diverse congregation of young professionals with a weekly attendance of over 5,000. He was also president of Redeemer City to City, which plants new churches in New York and other cities. For the last decade, the organization has launched over 200 churches in 35 cities. Logos has collected his sermons in the Timothy Keller Sermon Archive (1989–2011) and Timothy Keller Sermon Archive (2012–2013).
Keller wrote multiple New York Times bestselling books, including The Reason for God and The Prodigal God. His recent work included The Meaning of Marriage: Facing the Complexities of Commitment with the Wisdom of God, Walking with God through Pain and Suffering, and Every Good Endeavor: Connecting Your Work to God's Work. He is also wrote his own commentary and study guide series. Christianity Today has said, “Fifty years from now, if evangelical Christians are widely known for their love of cities, their commitment to mercy and justice, and their love of their neighbors, Timothy Keller will be remembered as a pioneer of the new urban Christians.”