1) The city of Corinth was devoted to pleasure and philosophy, with rampant sexual immorality and devotion to human wisdom.
2) Paul established a church in Corinth but it struggled with issues reflecting the culture, dividing into factions.
3) In his letter, Paul contrasts the "carnalities" plaguing the church with the "spiritualities" needed to correct them, emphasizing that human wisdom cannot solve spiritual problems - only the wisdom of God through the cross of Christ.