Theodoret and others have labeled Salmanassar, the Assyrian monarch who oppressed the Samaritans prior to Nebuchadnezzar, a wild boar as well, due to the harm he inflicted upon the Jews, though Nebuchadnezzar ultimately brought about their complete destruction.
According to St. Basil, human souls may be likened to grapes, while the protective fence symbolizes the commandments and angelic guardianship. Thus, it is crucial for each of us to have a holy angel guarding those who revere the Lord, lest we find ourselves punished for our sins, which may lead to the removal of this divine protection. We should aim to remain under the care of these holy beings, who keep those under their watch shielded throughout their time together. When God shields us through hidden means, we become impervious, unlike the path open to unclean spirits, making us less susceptible to being plundered. Conversely, a soul lacking this divine safeguard is vulnerable to attack by enemies—manifested as hostility and boasting, claiming dominion over the heavenly realm. Once the Holy Spirit departs from a barren soul, the protective barriers weaken—angelic assistance is diminished, and harmful knowledges invade, leaving the soul susceptible to unclean demons that consume it, robbing it of its spiritual fruitfulness. When passions triumph, they impair it like a mindless boar, rushing towards depravity and reveling in it. The Psalm also speaks of a vineyard ravaged by a solitary and vicious wolf, marked by malevolence and filled with sin. Theodoret states that swine, whether domesticated or wild, can severely damage grapes, with solitary and feral creatures being even more destructive, as such beasts possess great strength, much like wolves, and solitary beings inflict the utmost harm.