“Because by the works of the Law no flesh will be justified in His sight” (Romans 3:20).
Federal Visionists frequently misunderstand this verse to mean that no one can be justified by works of the Law. However, this is a rejection of Covenant Theology.
The Reformed faith has always held that the Covenant of Works offers life to those who keep the law perfectly. Of course, none of us could do this, but Jesus did keep the law for us. His works of the law are credited to us. Thus, we are justified by works, that is, by the works of Christ.
Admittedly, this sounds bizarre, but it is simply the ancient sprouline gospel that the Reformed faith has always proclaimed.