V.1-11 Another evil which was going on in the assembly at Corinth. When they had an argument with a person over something which they owned, they were taking that person to court. He tells them that the better way is to give in and take the loss. Then he reminds them that the believers are going to judge the world and angels too! If that be so, surely they could settle their disputes.
V.9-11 He reminds them that a greater Judge (God) sees everything.
V.12-20 The city of Corinth was one of the most depraved, immoral cities, yet the Greeks were the most educated, clever thinkers, whose writings are still in the world. Greek philosophy is spreading once more. The believers had formerly been living in all this corruption. After they had been saved a while, the first love was cooling, and they were beginning to go back to their old habits. They were falling into the trap of thinking that so long as they were pure in spirit, they could do what they liked with their bodies. They are reminded that the Holy Spirit lived in their bodies.