The common idea among Romanists is that Paul said that Christ's sacrifice replaced any obligation for keeping God's commandments in Rom. 10:4. This is an easily disprovable lie for at least 4 very specific reasons:
1) Luk. 23:56 shows the women who followed Christ keeping the Sabbath "according to the commandment" days after Christ died. And according to what Heb. 9:16-17 clearly teaches, the New Covenant was established the moment Christ died. Therefore, there is no biblical basis to assume Paul was saying Christ replaced the obligation of keeping God's laws.
2) The Greek word "telos" that is commonly translated as "the end" in KJV bibles means "goal/purpose". The message Paul conveying is not "Christ replaced the obligation of law-keeping"as opposed to "Christ became the standard of law-keeping that Christians are supposed to strive towards". The latter message is a lot more consistent with what he said in Rom. 13:9, what Peter said(1 Pet. 2:21), what John said( 1 Jhn 2:6, 3:23), and what Christ Himself said(Jhn 13:15, 34). Again, there is no biblical basis to assume Paul taught that Christ replaced the obligation of law-keeping.
3) Christ plainly stated in Matt. 5:17 that He did not come to diminish or abolish any part of the Law's authority as opposed to showing the level of law-keeping that was expected from future followers like Isa. 42:21 prophesied. And since that prophecy(and Christ's own teachings) says He would set the standard for future followers, there is no biblical basis to believe God's laws stopped being important after Christ's death.
4) The idea that Paul taught that Christ replaced the obligation of law-keeping contradicts Paul's own pro-law statements in passages like Rom. 2:13, 3:31, 7:12, 22, , 1 Cor. 7:19, and Acts 24:14. It also contradicts Acts consistently showing Paul keeping all of the commanded Holy Days after his conversion. It also contradicts 1 Cor. 5 where Paul reminded the Corinthians to keep the Passover and ULB Holy Days properly and with the right attitude. Again, there is no biblical basis to assume Paul said Christ replaced the obligation to keep God's laws.
A major stumbling block for Romanists is that they fail to understand what justification is, how it works, the context of Paul's teachings about what it means to be justified, and its symbiotic relationship with law-keeping. It is because of this that they incessantly talk about believing in the "finished work" of Christ with 0 knowledge or understanding of the fact that Christ's work was only the beginning of God's master plan for humanity. A person is indeed made just with God by believing in Christ's sacrifice. That's why Paul was crystal clear in stating that this part of the process is separate from law-keeping(Rom. 3:27-28), that forgiveness cannot be earned by any amount of law-keeping(Eph. 2:8-9), and that forgiveness cannot be earned with law-keeping because the law's only purpose is to define moral behavior(Rom. 3:20). After receiving forgiveness however, the Christian can only remain in the justified state through keeping God's laws. When the Christian sins, they are back at square 1 in needing Christ's sacrifice to bring them back into the justified state again. Understanding this process should be extremely easy for anyone professing Christianity to understand.
Romanists tend to erroneously believe Paul and James disagreed with each other about what it means to be justified, and so they don't believe there is any possibility that that they simply don't understand the concept of justification. It especially suits Protestants to subscribe to the "no works" theology because literally all of its adherents possess the same hostility towards God's laws that the radical Dems' have towards the U.S. Constitution, even if they won't admit it to themselves.
The whole context behind the teaching throughout Rom. 10 is that the Orthodox Jews foolishly cast aside God's commandments to establish their own counterfeit brand of righteousness(like Christ repeatedly told them in the Gospel accounts), and Romanists have done the same thing over the past 1900 years because they refuse to learn from history or God.
