Corinth was a big city with a long history by the time Paul arrived there in the first century. Disunity was the central problem, and the fundamental solution was love. Of all the books in the Bible, the letters to the church in Corinth read like a catalog of issues the church faces today. Human sexuality, divorce, tongues, disputable matters, church unity—these issues are as pressing today as they ever have been. The Corinthians also remind us of our own struggle to get along with each other in the church. This commentary introduces readers to the central problems in the church in Corinth, along with God’s revelation in the midst of turmoil—both then and now.