This chapter starts with a stiff warning about sin. Consider Israel; in spite of their advantages they still sinned terribly. Don't be like them. God provides a way out -- don't miss it. A bad example is part of the way to escape. We must always be on the look out for the way of escape and the strategies of grace to avoid sin.
Identification with Christ in communion is a powerful deterrent to compromise. I dare not identify myself with demonic activity or damage my brothers with whom I share a connection to Jesus.
Paule gives us his example of how he makes practical eating and drinking decisions so he can glorify God in everything.