Paul had a deep concern for the Christians in the churches which he planted. This is something which is very obvious in the second letter to the church in Corinth and the letter to the Galatian churches. Paul's integrity was being attacked by intruders in Corinth and he needed to defend himself in order that Christians there would not be destabilised in their faith. One of the things that stands out very clearly is Paul's pastoral heart and care for these Corinthian believers. The letter to the churches in Galatia was also written following the unsettling effects of intruders into the churches. Wrong doctrine was being taught and the Christians were in danger of being completely led away from the fundamental message of the gospel, that salvation is by grace through faith. As we look back from our position in the 21st century, we can be thankful for Paul's uncompromising approach to the gospel.