You better go back and re-read. At no time did Paul say to ignore the Law. He had great reverence for it. Paul stated the purpose of the Law was to point out sin. It is merely a standard. Obeying the Law does not save us. Only grace does that. Our feeble efforts to obey the Law come short but through the sacrifice of Jesus we are made acceptable. We are still not to murder, commit adultery blaspheme God or break the Sabbath.
“You better go back and re-read.”
Actually that’s what you need to do. Peter was specifically instructed to ignore parts of the law, because the Law is written on our hearts now and it does not serve God to keep rituals which have been superseded.
In Romans chapter 3, Paul discusses Law versus Faith. Here he says,
“But we know that whatever things the Law says, it says to those who are under the Law;”
If you read the whole passage, you’ll find that the context is that Christians are not ‘not under the law anymore’.
“Obeying the Law does not save us. Only grace does that.”
To be more specific, it is ‘grace through faith’. Eph. 2:8
“Our feeble efforts to obey the Law come short but through the sacrifice of Jesus we are made acceptable. “
As I said above, the Law is imprinted on our hearts, and that is what admonishes us not to do those things, since Jesus came not to destroy the Law but to fulfill it.
If you want to assert that we still must maintain the Sabbath, then you must reconcile that belief with what Paul said:
Col 2:16 “Therefore let no one judge you in food or in drink, or in respect of a feast, or of the new moon, or of the sabbath”
Rom 14:4 “Who are you that judges another’s servant? To his own master he stands or falls. But he will stand, for God is able to make him stand. One indeed esteems a day above another day; and another esteems every day alike. Let each one be fully assured in his own mind.”
“We are still not to murder, commit adultery blaspheme God or break the Sabbath.”
You realize that the Law is not just the 10 commandments, right? That means if you believe we must keep the Law, then we must keep all of it, not just a part of it.