This bread is the first-fruits Cyril, loc.
cit. of the future bread which is
ἐπιούσιος, i.e.
necessary for existence. For the word ἐπιούσιον
signifies either the future, that is Him Who is for a future age,
or else Him of Whom we partake for the preservation of our
essence. Whether then it is in this sense or that, it is fitting
to speak so of the Lord’s body. For the Lord’s flesh
is life-giving spirit because it was conceived of the life-giving
Spirit. For what is born of the Spirit is spirit. But I do
not say this to take away the nature of the body, but I wish to make
clear its life-giving and divine power St. John vi. 63..