Galatians 1:6-9

"For we labor diligently to write, to persuade our children, and also our brethren, to believe in Christ, and to be reconciled to God; for we know that it is by grace that we are saved, after all we can do."- 2 Nephi 25:23, The Book of Mormon
“We believe that through the Atonement of Christ, all mankind may be saved, by obedience to the laws and ordinances of the Gospel.” – Articles of Faith 1:3, Church of Latter Day Saints
"If any one saith, that by faith alone the impious is justified; in such wise as to mean, that nothing else is required to co-operate in order to the obtaining the grace of Justification, and that it is not in any way necessary, that he be prepared and disposed by the movement of his own will; let him be anathema." – Canon 9, Roman Catholic Council of Trent
"Yes, there are various things involved in getting saved. We must take in accurate knowledge of Gods purposes and his way of salvation. Then we must exercise faith in the Chief Agent of salvation, Jesus Christ, and do God's will the rest of our lives.” – “What must we do to be saved?”, The Watchtower, Sept 15. 1989

As we scan the scope of religion, there is a consistent hum of a motor that turns the gears of oppression and slavery in the hearts and minds of those who are being told that there is something they must do to be saved. Instead of seeing the plain testimony of Jesus and the New Testament authors, for centuries men in either willful deception or in inadvertent ignorance have tightened shackles on the wrists and ankles and necks of those who would be converts to their religious structure. When Paul wrote the book of Galatians, the shackle-forgers were already fast at work in the very churches that Paul had previously declared the true gospel.
Thankfully, we have been afforded the actual sermon Paul preached to the Galatians in Antioch in Pisidia. In Acts 13:38-39, Paul proclaimed, “Be it known unto you therefore, men and brethren, that through this man [Jesus] is preached unto you the forgiveness of sins: And by him all that believe [faith] are justified from all things, from which ye could not be justified by the law of Moses. [works]” Paul’s argument was that it is only through faith that a man can receive the grace of God to be justified.
In his Epistle to the Galatians, Paul now warns the Galatian churches, “If any man preach any other gospel unto you than that ye have received, let him be accursed.” All those who would seek to say that we are saved by anything besides the grace of God through faith alone, is not only wrong, but is purely wicked and cursed of God. Those who would add works to faith preach something that is anti-gospel.
It is for this reason that the phrase, “after all we can do” in the Book of Mormon, and “by obedience to the laws and ordinances” in the Latter Day Saints Articles of Faith, and the Council of Trent’s attack against faith alone, and the Jehovah’s Witness Watchtower declaration that we must “do God’s will the rest of our lives,” are anti-gospel. When you have changed the gospel, Paul would argue that you no longer have a gospel. When the work of salvation rests on your shoulders, you have departed from the realm of good news. The slavery and bondage of works will bind you until your eventual death and damnation. Faith plus works is not a gospel, no, this pollution of grace is simply anti-gospel.

Food For Thought: Pick one of the above heretical sources and explain in your own words using Paul’s arguments in Galatians 1:6-9, why these are not the true gospel.