By the word here, some understand St. Paul's promise to come to Corinth, that he did very seriously intend to come unto them; as if he had said, "As God is true to his promise, so has he taught me to be true to mine." Others understand by the word, St. Paul's preaching, that his doctrine was not mutable and changeable, but always the same.
Here note, How ready and forward the adversaries of religion are from any real or supposed imperfections in the ministers of God, presently to blame and burden their ministry, to charge their private errors and mistakes upon their doctrine. There is a mighty propensity and great forwardness in bad men, to cast all the imperfections of the ministers of the gospel upon their ministry and doctrine.
The devil is glad of an opportunity, by the failings of preachers, to bring the doctrines they preach either into doubt or disesteem. But though it be a great reproach for a minister to be mutable and contradictory in his doctrine, yet the wicked world do often accuse them of it, and charge them with it, when there is not the least occasion of it: Verily, as God is true, our word was not yea and nay.