2 Corinthians 11:10

The apostle often repeateth this, glorying much in it, that in this region of Achaia he had preached the gospel without charge to the hearers: he did so also at Thessalonica, 1 Thessalonians 2:5,6,9; but concerning them, he saith, what he no where saith of the Corinthians, that they received the word in much affliction; which might, probably, be the cause. It is most likely that he either discerned this people to be more covetous, and too much lovers of their money: or that there was a generation among them, who, if he had taken wages for his labours, would have reproached him as one that was a hireling, and who did all that he did for money. And, indeed, himself seemeth in the next verses to give this as a reason.