Galatians 1:8
But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
There is only one true gospel of Christ and His grace, and any other so-called gospel is no gospel at all but a perversion that troubles believers and removes them from Him who called them, so that even Paul himself or an angel from heaven who preaches differently falls under God's curse, a judgment repeated twice for emphasis. The gospel thus guarded is the pure truth first preached and received by which the church was converted, namely righteousness by faith, which is not after man nor received or taught from man but by the revelation of Jesus Christ, in contrast to Paul's former life in the Jews' religion when in zeal for the traditions of his fathers he persecuted and wasted the church of God. In Galatia believers were being so soon removed from Christ, the true foundation of faith, to obsolete Jewish ceremonies, because false teachers mixed Jewish traditions with the gospel, taught human doctrines opposed to Christ's teaching, and urged Gentile believers to observe the ceremonial law as necessary for salvation, thereby perverting the gospel and threatening the churches with division, heresy, and apostasy. The gospel already given, not the messenger's rank or authority, is the test of teaching, so that even an apostle or an angel must be rejected if he preaches differently, and the teachings of the Fathers, church decrees, and human interpretations have authority only when they agree with Scripture, for the Bible and the Bible only is the rule of faith and practice. What is believed is of consequence, for truth received in love sanctifies the soul while another gospel is one of Satan's most successful deceptions that turns people from God's Word to false theories and fables bringing fatal spiritual harm, so those who corrupt the gospel must be firmly rebuked, refused, left, and exposed by the word of truth while believers return to the faith received from the source of truth.
Meaning and Galatian Setting
There is only one true gospel of Christ and His grace, and any so-called other gospel is no gospel at all but a perversion of the gospel of Christ that troubles believers and removes them from Him who called them into grace. Anyone who preaches any other gospel than what was first preached and received falls under God's curse and divine condemnation, even if the preacher is Paul himself or an angel from heaven. That judgment of accursed is pronounced twice for emphasis. The warning was given because the Galatians were being so soon removed from Him who called them unto another gospel.
The gospel already preached and received which is thus guarded is the pure truths planted in Galatia by which the church was converted, namely the doctrine of righteousness by faith. It is not after man and was not received from man nor taught by man but by the revelation of Jesus Christ. This stands in contrast to Paul's former life in the Jews' religion, when beyond measure he persecuted and wasted the church of God and profited above his equals through exceeding zeal for the traditions of his fathers. That former work he understood only after his conversion described in Acts, when he had to suffer from the same will of men who hated Christ. Those who pervert this revealed gospel by turning believers to another gospel are not to be accepted.
In Galatia believers were turning from Christ, the true foundation of faith, to obsolete Jewish ceremonies. False teachers were mixing Jewish traditions with the gospel, teaching human doctrines directly opposed to Christ's teaching, and urging Gentile believers to observe the ceremonial law as necessary for salvation. By making observance necessary they turned people from the gospel of Christ and thereby perverted it. This open error was supplanting the gospel and threatening the churches with division, heresy, and apostasy, which drew Paul's sharp warnings and call for firm rebuke of those who corrupt the gospel.
Satan worked through those false teachers to confuse believers and pervert the gospel of Christ into another gospel that removed them from Him who called them. Their boasting and setting forth of wonder-working powers blinded the spiritual eyesight of many new converts, troubled them, and led them into error. For a time Paul lost his hold on the minds of those deceived. But by relying on the Word and power of God and refusing the interpretations of the apostate teachers he led the converts to see they had been deceived, defeated the purposes of Satan, and brought them back to the faith prepared to take their position intelligently for the truth.
No messenger, not even Paul himself or an angel from heaven, may replace or contradict the gospel already taught, and anyone who does so is under a curse. Paul's teaching agreed with Scripture and was confirmed by the Holy Spirit, and the Galatians had been taught the pure gospel in harmony with Scripture. Therefore believers so taught must reject, and not listen to, anything that opposes those truths and contradicts the gospel already taught.
Scripture Alone Tests Doctrine
The gospel already delivered is the test of teaching, not the rank or authority of the messenger, so that even an apostle or an angel from heaven falls under the curse if he preaches anything different from what was first preached and received. Teachings of the Fathers are to be received only when they agree with Scripture, and church decrees and human interpretations have no authority when they oppose the commands and word of God. No one may presume to enact dogmas at pleasure and impose contrary or opposing doctrines and beliefs as necessary to salvation, for the Bible and the Bible only is the rule of faith and practice. Any other faith or gospel contrary to the gospel God has revealed is forbidden, and the Scriptures are the sure rule for doctrine and life that must not be altered by additions.
God forbids the teaching of any other doctrine than what is conformable to His word, and requires the pure and exclusive preaching of His only word as contained in the books of the Old and New Testaments without adding anything contrary to it. There is no sure doctrine except what agrees with the word of God, which is to be explained by other and clearer texts. In all things necessary for the Christian it is easy of understanding and scatters darkness, being the only truth and the sure rule of all doctrine and of all life, which can never fail or deceive. He who builds on this foundation shall stand against all the powers of hell, while all human vanities set up against it shall fall before God.
There is no new gospel to be preached, for Christ as the divine Teacher and Enlightener revealed all of God that sinful human beings could bear without being destroyed. The revelations made in His Word are complete, and had more been needed He would have given them. The true gospel thus defended gives full recognition to the law of God and declares the authority of God supreme, requiring penitence for sin because sin is the transgression of the law. To invent a gospel of one's own through an unenlightened conscience not under divine grace and not counseled by the Word of God is Satan's delusion, substituting a law of one's own for God's law. A message that leaves out the knowledge of Christ and the efficacy of His atoning sacrifice for sins is another gospel even if preached by an angel from heaven, for that sacrifice is essential to the gospel's power to sanctify the soul.
Religious ceremonies cannot replace holiness of heart and life or the new birth, since salvation comes through faith in Christ and obedience to God's law, and false teachers distort the faith when they use religious claims to turn people away from this way of salvation. The test of truth is not miracles, which Satan can counterfeit to appear genuine, but faithfulness to the revealed Word.
Reject Error, Hold Truth
What is believed is of consequence, for truth received in love sanctifies the soul, while another gospel is one of Satan's most successful deceptions. That counterfeit gospel substitutes false theories and fables that turn people from God's Word and bring fatal spiritual harm to the soul, so a different gospel is not a harmless difference of belief. The liberality that regards correct religious faith as unimportant is wrong, and false teachers must be contended against not merely as vicious men but as inculcators of soul-destroying falsehood, as Elijah, Jeremiah, and Paul firmly and fearlessly opposed those who turned men from the word of God. No messenger, not even Paul himself or an angel from heaven, may replace the gospel already preached, and anyone who proclaims a different gospel, such as making observance of the ceremonial law necessary for salvation and thereby turning people from the gospel of Christ, falls under a curse and calls for firm rebuke. The safe course is to refuse to listen to such corrupters, to leave false teachers and return to the faith received from the source of truth, and for faithful servants to firmly oppose them and expose their errors by the word of truth.
Religious ceremonies cannot replace holiness of heart and life or the new birth, for salvation comes through faith in Christ and obedience to God's law, which false teachers distort when they use religious claims to turn people away from this way of salvation. The curse guards the doctrines of salvation, for Satan worked through boastful false teachers whose boasting and setting forth of wonder-working powers blinded the spiritual eyesight of new converts, troubled them, confused them with unwise theories and subtle fallacies that darken and confuse the mind and root out truth, perverted the gospel of Christ, and removed them from Him who called them into grace, namely from the pure truths and righteousness by faith by which the church was converted. For a time Paul lost his hold on the minds of those deceived, but by relying on the Word and power of God and refusing the interpretations of apostate teachers he led the converts to see their deception, defeated Satan's purpose, and brought them back to intelligent faith. Safety is in accepting the Word of God just as it reads and refusing the interpretations of apostate teachers, for those who do not will be snared in the trap, and the test of truth is not miracles, which Satan can counterfeit to appear genuine, but faithfulness to the revealed Word.
This testimony given to the early church must be heard and spoken with holy boldness today by workers in God's cause, who will face the same trials Paul endured. Faithfulness to the message already given means refusing teachings that would alter it, for preaching another gospel makes the preacher accursed even if he is an angel from heaven, and would make the work of proclaiming the truth worthless. The gospel must therefore be guarded from corruption as Luther guarded it, for his teaching was the gospel while superstition and fanaticism threatened to damage the work of reform, and the resulting disorder did not make the gospel itself the cause of the evil. Those who oppose the Sabbath commandment and the law cannot be convinced even by an angel direct from the courts of heaven, for like the obstinate unbelieving Jews who set themselves to reject Christ as Messiah despite His great power and miracles, they have chosen darkness rather than light, and if such an angel spoke truth to them they would call it Satan.