Galatians takes a look at Paul’s thoughts on Jewish Law.
The fourth Epistle, and the ninth book in the New Testament, is Paul's letter to the Church in Galatia; Galatians. It was written around 49 AD and addressed Paul's concerns that some Christians were saying that Jewish Law must be observed. Paul opposed this and said in his letter that faith in Christ alone is the only requirement of being a Christian. He also warned of the terrible results of failure to believe in the pure Gospel of Christ.
Galatians 1:8-9
"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. As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed"