That Christ is the Hand and Arm of God
In Isaiah: “Is God's Hand not strong to save? Or has He made His ear heavy, that He cannot hear? But your sins separate between you and God; and on account of your sins He turns His face away from you, that He may not pity. For your hands are defiled with blood, and your fingers with sins. Moreover, your lips have spoken wickedness, and your tongue meditates unrighteousness. No one speaks truth, nor is there true judgment: they trust in vanity, and speak emptiness, who conceive sorrow, and bring forth wickedness.” Also in the same place: “Lord, who has believed our report?
And to whom is the Arm of God revealed?” Also in the same: “Thus says the Lord, Heaven is my throne, and the earth is the support of my feet. What house will you build unto me? Or what is the place for my rest? For all these things has mine hand made.” Also in the same: “O Lord God, Your Arm is high, and they knew it not; but when they know it, they shall be confounded.” Also in the same: “The Lord has revealed His Arab that holy Arm, in the sight of all nations; all nations, even the ends of the earth, shall see salvation from God.” Also in the same place: “Behold, I have made you as the wheels of a thrashing chariot, new and turned back upon themselves;” and you shall thrash the mountains, and shall beat the bills small, and shall make them as chaff, and shall winnow them; and the wind shall seize them, and the whirlwind shall scatter them: but you shall rejoice in the saints of Israel; and the poor and needy shall exult.
For they shall seek water, and there shall be none. For their tongue shall be dry for thirst. I the Lord God, I the God of Israel, will hear them, and will not forsake them; but I will open rivers in the mountains, and fountains in the midst of the fields. I will make the wildernesses watery groves, and a thirsty land into watercourses. I will establish in the land of drought the cedar-tree and the box-tree, and the myrtle and the cypress, and the elm and the poplar, that they may see and acknowledge, and know and believe together, that the Hand of the Lord has done these things, and the Holy One of Israel has shown them.
Source: The Treatises of Cyprian (New Advent)