Why should Christians avoid teachings that lead back to the law?

Christians should avoid teachings that revert to the law because such teachings run counter to the grace and sufficiency of Jesus Christ. The Apostle Paul warned against the false notion that one can achieve righteousness through the law, asserting in Galatians 5:4 that to seek justification through the law is to fall from grace. Believers are called to rest wholly on the finished work of Christ instead of their flawed efforts. The law serves a purpose in revealing sin but cannot empower one to overcome it. By putting faith in Christ, believers are assured that their righteousness comes from Him alone, as He fulfills the law on their behalf. Any doctrine that detracts from this is considered to align with the spirit of antichrist.