Cyrill of Alexandria
In the blood of the covenant, You have released Your captives from the pit that holds no water. This proclamation is directed towards the righteous, salvific, and humble King—Christ—and illustrates the magnificent and wondrous deeds of His incarnation. The only-begotten Word of God willingly lowered Himself to take on human form, endured the cross, disregarding its shame (Hebrews 12:2), and offered His soul as a ransom for all, thus bringing forth for God the Father the blood of the eternal covenant. The prototype of this covenant is exemplified by the blood that Moses sprinkled on the people, as it is written: "Take Moses the blood and the very book of the covenant, sprinkle it on all the people saying, 'This is the blood of the covenant, which the Lord has made with you'" (Exod.
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24:7, 8). This served as a shadow of the reality, with that reality being Christ, who redeemed us all with the blood of the covenant. As stated by His disciple, we have been delivered not by perishable silver or gold but by the precious blood of Christ, the unblemished Lamb (1 Pet. 1:18, 19).
Thus, You, O just and gentle King, have liberated those who were made Your captives by the blood of the covenant—those whom You bound with the cords of love, encouraging them to submit to Your yoke and to openly bind the thoughts of their hearts. You have rescued them from the pit that holds no water, which we interpret as hell itself, devoid of life, since water symbolizes sustenance. We can also understand hell as the enticement of false idols; it is indeed a pit that steals life eternally from anyone who falls into it. The triumph of Christ, who descended to the dead, emptied hell, and opened the gates of the underworld to the souls in captivity, is clearly evident to all. The God of all, through the words of Jeremiah, lamented the Israelites who turned away from Him to follow idolatry, saying, "Heaven was terrified at this, and trembled greatly, saith the Lord. My people have committed two evils: they have forsaken Me, the spring of living water, and have dug for themselves cracked cisterns that cannot hold water" (Jer. 2:12, 13). Just as true and reliable knowledge of God is the source of life, so the broken cisterns represent the empty idols and misconceptions about Him.