Over the course of my ministry I have heard many people justify many programs and methods in the name of being "All things to all men." There is usually something worldly that is going on in the church to attract people, or something worldly in that persons life that they are saying is just a tool to reach more people for Christ. MacArthur takes this idea on and completely dismantles it.
He walks through the context of 1Corinthians 9:22-23
“I have become all things to all men, that I may by all means save some. And I do all things for the sake of the gospel, that I may become a fellow partaker of it” (1 Cor. 9:22, 23).
He also highlights features of Paul's ministry and his methodology. What he shows is that Paul never adopted or adapted methods of the world to attract people or please people. Instead what he did was deny himself certain rights and work within various religious expectations in order not to be an offense so that he could have the opportunity to clearly present the gospel in word and deed to the lost. If you have every debated what it means to be "all things to all men" or every used that phrase to justify worldliness in your life or in the church, you should read this chapter. It is spot on!
We should never sacrifice godliness or the clear teaching of scripture to try to reach more people. Instead, we should sacrifice our own preferences, without sacrificing truth, to humble ourselves to reach everyone we can reach with the gospel without compromise.