Did telling folks not to murder stop murder?
Did the prophets saying "To do justice and judgment is more acceptable to the LORD than sacrifice." keep folks from thinking a sacrifice will make them more acceptable to the LORD?
10 Then saith Pilate unto him, Speakest thou not unto me? knowest thou not that I have power to crucify thee, and have power to release thee? 11 Jesus answered, Thou couldest have no power at all against me, except it were given thee from above: therefore he that delivered me unto thee hath the greater sin. John 19:10-11
So if not under the law then how does one do justice and judgment?
From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day. Matt 16:21
Heck of a way to prove a point.