Sardis prospered under King Croesus of Lydia. Croesus was reputedly the richest man in the world at that time. The city’s wealth came largely from the precious mineral deposits in its streams and rivers. The first gold coins minted in Asia Minor may have been produced in Sardis. The city had a thriving marketplace, ornate temples, a lavish health center, grand homes, and remarkable architecture. By the time the book of Revelation was written a small Christian community lived in Sardis. Being a committed follower of Christ was difficult amid its materialism and affluence. The lessons in John’s message to Sardis speak volumes to an end-time people waiting for the return of Jesus.