[daniel1212]

And David longed, and said, Oh that one would give me drink of the water of the well of Beth–lehem, which is by the gate! And the three mighty men brake through the host of the Philistines, and drew water out of the well of Beth–lehem, that was by the gate, and took it, and brought it to David: nevertheless he would not drink thereof, but poured it out unto the Lord. And he said, Be it far from me, O Lord, that I should do this: is not this the blood of the men that went in jeopardy of their lives? therefore he would not drink it. These things did these three mighty men. (2 Samuel 23:15-17)

So when we say, “It is the blood of the three mighty men” we are saying nothing more than what David himself says: “ is not this the blood of the men that went in jeopardy of their lives.” We’re not making this up. We’re not coming up with something new or strange. We’re just agreeing with David. We believe what he says. David will not mislead us. His words are true, and they are powerful. The cup is not just water that reminds us of, or represents, their blood. That false teaching came along with a guy named Zwingli in the 16th century.

So (rather than the Biblical metaphorical meaning, in which the church itself is one loaf) take such language plainly literally. Thus "Take, eat: this is My body... Drink....this is my blood" means the apostles were looking at actual incarnated bloody flesh, and a cup of actual red blood, just as manifestly physical as Christ was when He sweated blood and was crucified, and a spear thrust into Him and out came water. And who said "Behold my hands and my feet, that it is I myself: handle me, and see; for a spirit hath not flesh and bones, as ye see me have" (Luke 24:39); And not some inanimate objects that do not look, behave, smell, taste to be the body and blood of Christ, but scientifically test to be just what they appear to be, despite it being claimed that they no longer exist as such.

Thus John emphasizes the manifestly physical incarnated Christ, in contrast to one whose body was not according to what He appeared to be:

Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing. (John 20:27)

That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; (For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us;) (1 John 1:1-2)

This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood. And it is the Spirit that beareth witness, because the Spirit is truth. (1 John 5:6)

[Elsie]

...be not faithless, but believing. (John 20:27)