What was the city of Corinth like morally when Paul wrote to it?

Les explains that Corinth was wracked with immorality, and these practices were part and parcel of their whole society; they thought nothing different of it. Into that setting Paul came with the gospel of the grace of God. Les emphasizes that anything but grace would never have succeeded, but it was only by grace that God began to save these wicked Corinthians. He also compares the spiritual life to the physical: believers do not enter God’s family as mature spiritual people but come into salvation as babes in Christ, so failures and growth are expected.