
Ambrose of Milan
Catena Aurea · Matthäusevangelium 26
And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; For this is my blood of the new testament, which is shed for many for the remission of sins. But I say unto you, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father’s kingdom.
(de Sacr. v. 1.) If Melchisedech offered bread and wine, what means this mixing of water? Hear the reason. Moses struck the rock, and the rock gave forth abundance of water, but that rock was Christ.Also one of the soldiers with his spear pierced Christ’s side, and out of His side flowed water and blood, the water to cleanse, the blood to redeem.m