“What shall we say then? That the Gentiles, which followed not after righteousness, have attained to righteousness, even the righteousness which is of faith. But Israel, which followed after the law of righteousness, hath not attained to the law of righteousness. Wherefore? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumblingstone” (Romans 9:30-32).
In this text the issue is righteousness. The Israelites who sought righteousness by obedience to the law never achieved it. But the Gentiles who sought it by faith in Christ did, for Christ alone attained to the law’s requirement of righteousness, imputing that righteousness to his children by faith.
—Read more in the article 'Is the gospel part of the law?' by Rev. Cory Griess in the upcoming June 2018 issue of the Standard Bearer.