and my language and the message I preached were not adorned with pleasing words of worldly wisdom, but they were attended with proof and power given by the Spirit,

Now in this matter of trustees the first and final requirement is that they should prove to be trustworthy.

If I am not an apostle to other people, I certainly am one to you, for you yourselves, by virtue of your union with the Lord, are the proof of my apostleship.