10. The truth of Christ is in me. Lest any one should suspect, that Paul’s words were designed to induce the Corinthians to be more liberal to him in future, and endeavor to make amends for their error in the past, he affirms with an oath, that he would take nothing from them, or from others in Achaia, though it were offered to him. For this manner of expression — the truth of Christ is in me, is in the form of oath. Let me not be thought to have the truth of Christ in me if I do not retain this glorying among the inhabitants of Achaia. Now Corinth was in Achaia. (827)
(827) “See Calvin on the Corinthians, vol. 1, p. 37.