6 In the blessing of Judah also this same thing is signified, where there also is expressed a figure of Christ, that He should have praise and worship from his brethren; that He should press down the back of His enemies yielding and fleeing, with the hands with which He bore the cross and conquered death; and that He Himself is the Lion of the tribe of Judah, and should couch sleeping in His passion, and should rise up, and should Himself be the hope of the Gentiles. To which things divine Scripture adds, and says, “He shall wash His garment in wine, and His clothing in the blood of the grape.” But when the blood of the grape is mentioned, what else is set forth than the wine of the cup of the blood of the Lord?
Source: The Epistles of Cyprian (New Advent)