In Romans 9:30-10:4, Paul reveals a profound paradox: those who don't try to earn salvation through works succeed, while those who do fail. The Jews stumbled over Jesus Christ, the 'stumbling stone,' because their self-righteousness prevented them from accepting Him as their Savior. Paul emphasizes that Christ is the 'end of the law'—both its fulfillment and the termination of its condemning power for believers. While every other religious system leaves people wondering if they've done enough, the biblical gospel confidently declares that Christ has done it all. Those who believe in Him will never be disappointed or put to shame.