Paul handled sin in the church differently than the way Peter handled it.

When Ananias and Sapphira sinned against the Holy Spirit by keeping a portion of their contribution to themselves (a lying heart that made them put up a hype of their sacrifice), Peter rebuked their sin openly and condemned them to death.

Paul was a mature believer. He wanted the Corinthian believers to put away the sinful man who was openly committing a grievous sin of incest and to deliver him to Satan so that his body might be tortured but his soul be saved. He gave the sinner an opportunity to repent – a father’s heart indeed! And when the sinner repented, he wrote to the believers again to accept him into the congregation by forgiving his sin.