Agricultural imagery paints a tragic picture of total ruin, capturing the devastation of both the Land of Israel and its people. Invading forces are likened to destructive caretakers who completely ravage a once-thriving estate. The many shepherds mentioned are not ordinary keepers of flocks, but rather represent the foreign kings and military commanders of Nebuchadnezzar, King of Babylon [רש״י, רד״ק, מצודת דוד, מלבי״ם]. Just as a shepherd guides his sheep, these kings acted as thieving shepherds [ביאור שטיינזלץ], leading their massive armies to consume and destroy the nation. The people of Israel are viewed as a fruitful vineyard [רד״ק], while the physical land is the estate itself. The invading armies did not merely conquer the territory; they physically crushed and trampled the earth underfoot [רש״י, רד״ק, מצודת ציון].
This devastation unfolds in a deliberate, measured progression that mirrors the three separate military campaigns Nebuchadnezzar launched against Judah [מלבי״ם]. In the first stage, the enemies ruined the vineyard by directly attacking the vines, representing the initial strike against the people. In the second stage, after the land was stripped bare of its vegetation, the armies mercilessly trampled the empty soil. Finally, the third and most severe stage saw God's beloved and cherished portion reduced to a desolate wasteland. The invaders ruined the earth so completely that it was no longer fit for planting or capable of producing any future growth.