[Though Jesus ultimately fulfilled the Law and the Prophets, at the
time He was preaching the Sermon they had not been fulfilled. So, true
to His statement in verse nineteen, He taught His disciples to be
faithful to God's Law as it then stood.
But what about the contrasts found in Mt 5:21-48? Are not these to be
viewed as comparisons between the OLD Law and the NEW Law?
Here are some thoughts along these lines...]