As the truth of Christ is in me,.... To show the firmness of his resolution, and how determined he was to abide by it, he joins an oath to it; for these words are the form of an oath; and it is as if he should say, as sure as Christ is truth, who is in me; or as that the truth of grace, or the truth of the Gospel of Christ is in my heart and mouth, so sure will I constantly persevere in this determination; or let the truth of Christ never be thought to be in me, if I do not:no man shall stop me of this boasting in the regions of Achaia; or this boasting shall not be stopped in me; of preaching the Gospel freely at Corinth, and that he had not been chargeable and burdensome to them; nor would he be for time to come, neither there, nor in any part of Achaia, of which Corinth was the metropolis;See Gill on "2Co 9:2".
No man should stop his mouth from boasting of this, by putting anything into his hands, for he was determined not to receive anything from any person in these climates; not but that he reserved a liberty in himself to receive from other persons and churches, for his comfortable subsistence, and so much the limitation of his resolution to these parts implies; for if he had not intended to have received a supply from any persons whatever, the restriction to the regions of Achaia would have been unnecessary; and he should rather have said, that no man should stop him of this boasting in any part of the world.