1 Corinthians 5:1 Fornication

Paul wrote his first letter to the church in Corinth addressing several problems in the church.  The first problem was divisions in the church.  The second problem that Paul addresses in the Corinthian church was the problem of fornication.  He stated that it was commonly reported that there was fornication in the church at Corinth. We can gather from just those few words that that was a bad thing.  That there should be no fornication found in the church.  It should not have been found in the church in Corinth, and should not be found in the modern Christian church. But what is fornication?  In this first message of chapter five, we define it.