Augustine of Hippo
This necessitates the role of the interpreter, as merely being a reader and a worshipper is insufficient: assist me with focus, for the reference to this vine in the psalm often envelops the inattentive in obscurity. However, the initial nation of Israel was indeed this vine. The Israelites once reigned from the sea to the river. To the sea; Numbers 34:5 indicates that the ocean was nearby. And to the Jordan River, where a part of the Israelites dwelled on the western side, while the entire nation lived within the river’s banks. Thus, to the sea and to the river represents the kingdom of Judah and the kingdom of Israel, though not extending from sea to sea or from river to the ends of the earth; this speaks of the future fulfillment of the vineyard, as prophesied in this passage.
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When I mention the prophesied fulfillment, he returns to the origin from which the fulfillment emerged. Would you care to hear about this origin? It reaches as far as the river. And concerning its conclusion, it shall possess dominion from sea to sea; that is, it has filled the earth. Let us consider Asaph’s testimony regarding what happened to the initial vineyard and what we can anticipate from the second vineyard, which is of the same nature. Thus, regarding the vineyard, what was its starting point from which it was meant to cover the earth? Its shadow reached the mountains. Who do the mountains represent? The prophets. Why did its shadow encompass them? Because they spoke in hidden terms regarding what had been foretold. You hear from the prophets: ‘Keep the Sabbath, circumcise the child on the eighth day, offer a sacrifice’—whether a sheep, a calf, or a goat. Do not be alarmed; its shadow envelops the mountains of God; after the shadow will come the revelation. Its branches consist of the cedars of God, indicating that it has overshadowed God’s cedars—great and lofty, but belonging to God. The cedars symbolize the arrogant that must be brought down. The cedars of Lebanon, the heights of the world, overshadowed this vineyard along with the mountains of God—the holy prophets and patriarchs.