Paul addresses the believers who were gathering together for a shared meal called The Lord's Supper. This is different than our modern-day communion, this was a meal shared among all believers. There was favoritism and divisions growing in the church because of how some were being treated at these meals. Paul writes them to remind them that the church isn't a place for exclusion, and it's more than a physical meal. There is a spiritual element to church. If we're just physically showing up to a physical building with expectations of an emotional feeling we will miss the point. We should expect to encounter the Creator of the universe and have a spiritual experience when we gather together in worship.