For this cause we also thank God without ceasing, that, when you received from us the word of the message of God, you accepted it not as the word of men, but, as it is in truth, the word of God, which also works in you who believe.

 (c) It was being said that Paul's preaching was guilefully aimed at deluding others. The propagandists of Hitler Germany discovered that if a lie is repeated often enough and loudly enough it will in the end be accepted as the truth. That was the charge which was levelled at Paul. 