Yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
John MacArthur in his commentary on Galatians says the following about justification and salvation:
"The basic term was originally used forensically of a judge declaring an accused person not guilty and right before the law. It was the opposite of being declared guilty and condemned. Throughout Scripture, justification refers to God's declaring a sinner to be guiltless on the basis of faith in Him. It is the free and gracious act by which God declares a sinner right with Himself – forgiving, pardoning, restoring, and accepting him on the basis of nothing but trust in the Person and work of His Son, Jesus Christ.
But when Cephas came to Antioch, I opposed him to his face, because he stood condemned. For before certain men came from James, he was eating with the Gentiles; but when they came he drew back and separated himself, fearing the circumcision party. And the rest of the Jews acted hypocritically along with him, so that even Barnabas was led astray by their hypocrisy. (Galatians 2:11-13 ESV)
In a sermon "Not Corrupting the Word," J. C. Ryle told the following account:
In the sixteenth century, there was a protestant reformer in England by the name of Hugh Latimer. He was known as a great preacher of his day and as a result, he had many opportunities to speak. Once he found that he was to preach before the King Henry VIII of England. As he thought about his great responsibility to bring a message before the king, he realized that the message that God laid on his heart was not the message that the king would want to hear.
Once the devil was walking along with one of his cohorts. They saw a man ahead of them pick up something shiny. "What did he find?" asked the cohort.
"A piece of the truth," the devil replied.
"Doesn't it bother you that he found a piece of the truth?" asked the cohort.
"No," said the devil, "I will see to it that he makes a religion out of it."
Truth taken out of context and twisted is the basis for many false religions.
I am astonished that you are so quickly deserting him who called you in the grace of Christ and are turning to a different gospel - not that there is another one, but there are some who trouble you and want to distort the gospel of Christ. (Galatians 1:6-7 ESV)
A well-known preacher of the United States was asked to say a few words to a gathering in an open-air meeting. At the close of his address, an atheist stepped up to him and challenged him to a debate, assuring him that he would bear all the expense of renting the hall and advertising. The preacher said, "I accept on one condition: When you bring with you fifty people who have been helped by your philosophy, I am ready because I will bring you hundreds who will testify to the transformation this Gospel has wrought in their lives." Needless to say, the challenger departed and never returned.
There is only one life-changing gospel. There is only one gospel that brings life and peace to the sinner.