Why was John Calvin's Geneva called the city of god?

John Calvin's Geneva was referred to as the "City of God" because it embodied his vision of a Christian community governed by biblical principles and moral discipline. Under Calvin's leadership, Geneva implemented strict religious and civic laws aimed at creating a pious society, emphasizing the importance of community worship and personal morality. This transformation attracted many Protestant reformers and became a model for other cities seeking to establish similar religious governance. The moniker reflects both the city's commitment to reform and its aspiration to be a beacon of Protestant values.