Such people are spiritual dogs and swine, who have no appreciation for that which is holy and righteous.They will take that which is holy, the pearls (the rarest and most valuable of jewels; see Matt.
Do not give what is holy to dogs, and do not throw your pearls before swine, lest they trample them under their feet, and turn and tear you to pieces.(Matthew 7:6) In biblical times dogs were seldom kept as household pets in the way they are today.Except for those used as working animals to herd sheep, they were largely half-wild mongrels that acted as scavengers.They were dirty, greedy, snarling, and often vicious and diseased. It would have been unthinkable for a Jew to have thrown to those dogs a piece of holy meat that had been consecrated as a sacrifice in the Temple.Because a Jew would never have tried to domesticate a pig, most of the swine they encountered were, like the dogs, wild animals who foraged for themselves, often in garbage dumps on the edge of town.Like the scavenging dogs, those swine were greedy, vicious, and filthy even by ordinary pig standards.
If you came between them and their food they would likely turn and tear you to pieces with their tusks and sharp hooves.
Jesus’ point is that certain truths and blessings of our faith are not to be shared with people who are totally antagonistic to the things of God.
Some parts of those offerings were burned up, some parts were eaten by the priests, and some would often be taken home and eaten by the family who made the sacrifice.
The part left on the altar was the part which was consecrated exclusively to the Lord, and therefore was holy in a very special way.
If no man was to eat that part of the sacrifice, how much less should it be thrown to a bunch of wild, filthy dogs. Swine were considered by Jews to be the epitome of uncleanness.
That is the reason Antiochus Epiphanes’ sacrifice of a pig on the Jewish altar and forcing the priests to eat it was such an absolute abomination-and touched off the Maccabean revolt against Greece in 168 b.c.