 Many of the New Testament epistles chronicle the significant temptations that raged against the early church, both from within and without. You see, from the very beginning, the church was forced to deal with heresies, false gospels and false teachers. For example, here's St. Paul writing to the church at Galatia. Quote, I'm astonished, he said, that you're so quickly deserting him who called you in the grace of Christ and are turning to a different gospel.