Paul draws back from the language of demand, mandate and requirement. He urges the church to step up to the level of other's devotion. This is difficult to do without being manipulative and competitive. But it is a reality check. Paul is saying only what is true.
Actions do speak louder than words.
The Jesus Principle. Everything we do in church needs to be compared to the mind and spirit of Jesus Christ. When we know where Jesus would go in our community, what he would say, what he would do, then we know what the agenda for our church needs to be. The Clear Expectation Principle. Notice that he waits awhile before giving advice.