For every person in America who is hostile to the gospel of Christ, there may be ten more who say they believe in the gospel and profess to be Christians. Of course, this is not true. Most of these people are not true followers of Christ and do not even know (let alone believe and act on) the real gospel of Christ. Why is there this shocking discrepancy? One of the reasons for this great disconnect is what we might call the "curse of mental assent." This short eBook explains the crucial difference between mental assent and true saving faith.