I have found most cults multiply non-biblical requirements for salvation. And they all advocate some form of works salvation.
AND YOU [He made alive], when you were dead (slain) by [your] trespasses and sins
2 In which at one time you walked [habitually]. You were following the course and fashion of this world [were under the sway of the tendency of this present age], following the prince of the power of the air. [You were obedient to and under the control of] the [demon] spirit that still constantly works in the sons of disobedience [the careless, the rebellious, and the unbelieving, who go against the purposes of God].
3 Among these we as well as you once lived and conducted ourselves in the passions of our flesh [our behavior governed by our corrupt and sensual nature], obeying the impulses of the flesh and the thoughts of the mind [our cravings dictated by our senses and our dark imaginings]. We were then by nature children of [God’s] wrath and heirs of [His] indignation, like the rest of mankind.
Ephesians 2:1-3
These three verses close the door on all systems of works-salvation, for spiritually dead slaves who are oblivious to their incapacity are hardly candidates for success in any works-righteousness system.
The good news, the gospel, is that God imputes the righteousness of Jesus to us apart from our works. Salvation is through Jesus alone, not because of anything we have done.
The Apostle Paul warned us about it in the book of Philippines. He teaches that if anyone could be made right with God by virtue of accomplishment, that he would be that person! If Paul had failed to achieve acceptance with God through all of his inherited and earned virtues, then, he reasoned, no one could climb up to God on his own merits. That to mix the grace of God with the works of the flesh is unsound as far as salvation goes.
We can do good works after we are saved, but not to become saved. We can prove that we belong to Jesus by following His way (James 2:14–26) only because the Holy Spirit has changed our hearts after we accept Jesus as Savior.
So why do men fight so against the Bible’s teaching that man is dead in sin? Because it removes all possibility of works-salvation. That is, man’s merit, man’s work, man’s action is destroyed by the recognition of the truth of our state outside of Christ. All pride, all boasting, is excluded.