2 Corinthians 11:12; What I Do, That I Will Do
The Apostle Paul will not receive monetary remuneration from the Corinthian church and will continue with this practice. This would put him in stark contrast with the enemies of the gospel who will not serve unless they are paid. He knew that this will distinguish and set him apart from them as a testimony. Therefore, he will continue to do what he did. In this way, the enemies of the gospel will have no ground to fault the gospel that he preached. The Apostle Paul served his Lord Jesus and knew whom he served, the blessings of such service and source of his true reward!
He saw there were who preached Christ, the gospel that he knew and was gloriously saved. He rejoices in their good work – Philippians 1:15-18 Some indeed preach Christ even of envy and strife; and some also of good will: The one preach Christ of contention, not sincerely, supposing to add affliction to my bonds: But the other of love, knowing that I am set for the defence of the gospel. What then? notwithstanding, every way, whether in pretence, or in truth, Christ is preached; and I therein do rejoice, yea, and will rejoice.
However, these men who came into Corinth preached another gospel. As such, he felt compelled to sound the alarm bell to warn them. He was set for the defence of the true gospel.