Its seems to me from my work with evangelism that there is a common theme that crops up time and time again . To one degree or another its ' works salvation ' . It usually is disguised and couched in less than obvious ways ,but winds up the same. This is from cults to false religions and sadly within christianity. The more subtle variations of the theme are usually framed in terms connected to baptism, obedience, perseverance, endurance, faithfulness , commitment, surrendering, Lordship, ect . I see this as virtue
signalling . But the hardest message to be accepted , and is hotly contested is the simple truth of salvation through faith and once your sealed by the Holy Spirit this is until the day of redemption. Paul was constantly attacked for preaching ' licence to sin ' , turning the message of grace into a message of licence. I see this one truth that stands alone . Where as all other groups , isms, cults , false religions are on the opposite end with different degrees of course , but essentially argue against ' sealed by the Holy Spirit until the day of redemption. I believe that is the Gospel and all other messages are attacking the Gospel.