Paul speaks to the Corinthians with his concern that just as Eve was beguiled by the Devil in the Garden of Eden, so will the Members be fooled into believing a different Gospel than the one he preaches.
“For if he that cometh preacheth another Jesus, whom we have no preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him.” (2 Corinthians 11:4) In other words, if someone preaches a different gospel than what is the truth, you should not listen to them! Paul goes on to explain that the Gospel has no price, and asks the Corinthians if he has done something wrong by offering them the Gospel free of charge; “Have I committed an offence in abasing myself that ye might be exalted, because I have preached to you the gospel of God freely?” (2 Corinthians 111:7) It seems that the Corinthians were confused as to how the gospel could be free, and were somehow offended that they were not being taken advantage of. The Gospel of Jesus Christ is FREE, and no one preaching the gospel should be paid for doing so! That means that ministers, reverends, fathers, pastors, etc. should not be paid!
Paul explains that many will come and deceive them, Paul describes such people as; “…false prophets, deceitful workers, transforming themselves into the apostles of Christ… for Satan himself is transformed into an angel of light.” (2 Corinthians 11:13-14)
Paul knows that the Corinthians are being fooled and because of this, Paul decides to “…glory after the flesh…for ye suffer fools gladly…” (2 Corinthians 11:18-19) Because the Corinthians are not so accepting of his speaking without having divulged into his credentials and boast of himself… Paul caters to them and boasts of himself;
“(I speak as a fool) … Thrice was I beaten with rods, once was I stoned, thrice I suffered shipwreck, a night and a day I have been in the deep; In journeyings often, in perils of waters, in perils of robbers, in perils by mine own countrymen, in perils by the heathen, in perils in the city, in perils in the wilderness, in perils in the sea, in perils among false brethren.” (2 Corinthians 11:23; 25-26) Essentially Paul is saying that he has no need to boast of his credentials, as to why they should listen to him. He should have no need to explain all of his acts, but he does so anyways. Why? Because they wouldn’t listen to him if he didn’t.