13 This is the third time I am coming to you. “Every matter must be established by the testimony^[a] of two or three witnesses.”^{[b] 2} I have said this before, and before I arrive I am saying it again—as I did when I was present the second time, even though I am now absent—to those who sinned earlier and to all the rest: When I arrive, I will not spare you. ³ I say this because you are seeking proof that Christ (who is not weak toward you, but is powerful in you) is speaking in me.