In a profound interpretation, the prominent Basil elaborates that Moab symbolizes those excluded from the worship of the Lord. As it states, a Moabite or Ammonite may not enter the congregation until the third, even the tenth generation (Deuteronomy 23:3). However, since baptism offers the forgiveness of sins, granting respite from burdens, it points toward redemption and dedication to God, thus saying: Moab is the vat of the bath, or a vessel of neglect. Moab and Ammon, the offspring of Lot noted for their illicit beginnings, reveal that even this once godless nation shall find hope in me.
The Divine Maximus explains that Moab translates to the essence of the father, referring to our physical bodies, which, like a bath, facilitates the cleansing of our sins. The vessel of confidence represents purification—having the readiness through cleansing in life's continuity to gain the blessings promised through faith. Theodoret indicates that "vat" in Scripture often conveys punishment. Blessed Ezekiel was commanded to refer to Jerusalem as a cauldron, its people as meat, the king of Babylon as the fire, and the vital sustenance as the liquid essential to prevent the meat from burning (Ezekiel 11:3). The blessed Jeremiah also envisioned a vessel ablaze with his gaze set toward the north. However, interpreting this vessel as the Divine source, which eradicates sin and purifies those renewed through it, is fitting.
Upon Idumea, my foot shall tread. David likens shoes to a footstool, indicating his intention to walk through Idumea, which signifies his mission to subjugate it for his people, Israel, providing them strength in battle. Basil remarks that all nations have submitted, placing their burden under Christ's yoke. Hence, it is mentioned that shoes are worn in Idumea. The shoes of divinity refer to the God-bearing flesh, which made its way to humanity. Alternatively, Idumea derives its name from Edom, associated with Esau, or it may denote the ministers of the Gospel.
Idumea is considered bloodshot, as per Didymus, emblematic of an earthly realm. According to St. Maximus, Idumea can also relate to each individual's flesh, which we equip with shoes to shield our souls from the wickedness and thorns of evil, emphasizing that overcoming carnal desires necessitates the discipline of ascetic practices. Furthermore, in Maximus's view, the "shoes of the soul" embody the reasoned and contemplative suppression of sensuality, enabling the soul to navigate this present age without harm, perceiving through sensory experience while reflecting on the virtues represented in them, manifesting knowledge of the singular original reason.
Isychius articulates that Christ, having triumphed over the Gentile church, rendered it esteemed over Israel, as he spreads his shoe over them—symbolic of the Gospel heralded by John the Baptist who proclaimed, "He who comes after me, I am not worthy to untie the thong of His sandal," indicating it was not yet time for Him to reveal the Gospel. Similarly, Paul speaks of being shod with readiness for the Gospel of peace. The mention then that the foreigners—from Moabites to Idumeans and neighboring nations—have submitted expresses that what was a future act is described in the past tense, in line with prophetic speech that addresses what is to come as if it has already occurred.