The law of Moses this side of the Cross of Christ had lost its function, so any attempts to insert it into the Way or to impose it upon others was an attempt to use it for self-justification. It was not only a lost cause, but an attack upon the sufficiency of Christ’s sacrifice.
“Sin bred enmity; the cross has brought peace. Sin created a gulf between man and God; the cross has bridged it.” —J.R.W. Stott, Basic Christianity
Christ’s death brought about manifold benefits, but they may be summed up in this, that “in Christ God was reconciling the world to himself” 2Co 5.19.