continued…
From St. Cyprian of Carthage, Epistle 63 (cited by Stone):
2, ‘nor can His blood, by which we have been redeemed and quickened, be seen to be in the cup, when wine, which is shown (ostenditur) to be the blood of Christ, is absent from the cup’;
4, ‘our Lord Jesus Christ, who offered sacrifice to God the Father, and offered the very same thing as Melchizedek, that is bread and wine, namely His body and blood’;
6, ‘when the blood of the grape is spoken of, what else is shown than the wine of the cup of the Lord which is blood?’;
7, ‘mention is made of wine that by wine may be understood the blood of the Lord, and that what was afterwards manifested in the Lord’s cup might be foretold in the predictions of the prophets.’ (Cyprian, from Stone, volume 1, page 40, footnote)
"Communicants are said to receive and to be sustained and protected by the BODY AND BLOOD OF CHRIST [De laps 2; De dom orat 18; Ep 11:5; 57:2; 58:1,9; 63:7]. When any communicate unworthily the BODY AND BLOOD OF THE LORD are taken and drunk with defiled hands and polluted mouth, and are outraged and profaned [De laps 16,22,25; Ep 15:1; 75:21].
"Sacrificial phraseology then occurs throughout the second century in different parts of the Church. The sacrificial idea receives somewhat more definite expression in the third century from the Carthaginian writers, Tertullian and St. Cyprian. In a description of Christian life and worship Tertullian says 'We annually offer oblations (oblationes facimus) on behalf of the DEPARTED on the anniversaries of their deaths [De cor 3]. Elsewhere he mentions among the duties of a Christian husband that he ‘offers sacrifice’ on behalf of his wife [De exhort cast 11], and of a Christian widow that she ‘annually offers sacrifice on behalf of the SOUL’ of her husband ‘on the anniversary of his DECEASE’ [De monog 10].
“The words ‘SACRIFICE’, ‘PRIEST’, and ‘ALTAR’ are all used by him [Tertullian] in a Christian sense [E.g. -sacrificium- in De orat 18,19; -sacrificare- in Ad Scap 2; -sacerdos- in De bapt 17; -ara- in De orat 19]; and in a case which he contemplates of a communicant on a fast day receiving the Sacrament in his hands but not consuming it till later in the day at home, he speaks of the communicant having taken part in the SACRIFICE [De orat 19]” (Stone, vol 1, pg 47-48).
"The writings of St. Cyprian are FULL of allusions to the Eucharist as a SACRIFICE. The priestly terms for the ministry, -sacerdos- for the bishop, -sacerdotium- for his office, are found. To celebrate the Eucharist is to ‘OFFER’ and to ‘SACRIFICE’. The Eucharist itself is the ‘SACRIFICE’, or the ‘OBLATION’, or ‘THE SACRIFICE OF THE LORD’, or ‘THE VICTIM OF THE LORD’. The place where it is offered is the ‘ALTAR’.
[E.g. -sacerdos- in De unit 17; Ep 1:2; -sacerdotium- in Ep 17:2; -offerre- in Ep 16:2; -sacrificare- in De laps 25; -sacrificium- and -oblatio- in Ep 1:2; -sacrificium dominicum- in Ep 63:9; -dominica hostia- in De unit 17; -altare- in De unit 17].
"In a remarkable sentence, occurring when he is dealing with the point of practice that both wine and water are to be placed in the Eucharistic cup, St. Cyprian writes –
‘If our Lord and God Christ Jesus is Himself the High Priest of God the Father and offered Himself as a sacrifice to the Father and commanded this to be done for a memorial of Himself, certainly that priest truly performs his office in the place of Christ who imitates that which Christ did, and then offers in the Church to God the Father a real and complete sacrifice when he begins to offer as he sees Christ Himself offered’ [Cyprian, Ep 63:14 Latin quoted earlier].
“St. Cyprian quite definitely connects the Eucharist with the commemoration of the passion, and says that ‘the passion is the sacrifice of the Lord WHICH WE OFFER’ [passio est enim domini sacrificium quod offerimus – Ep 63:5,9,17]” (Stone, pg 48,50).
More from J.N.D. Kelly EARLY CHRISTIAN DOCTRINES –
"The priest, it would appear, sacramentally re-enacts the oblation of His passion which the Savior originally presented to the Father. Further, it is clear from what he says elsewhere about offering it on behalf of people in need [Ep 15:1; 17:2], and especially on behalf of the dead [Ep 1:2; 12:2; 39:3], that Cyprian conceived of the eucharistic sacrifice as possessing OBJECTIVE EFFICACY.
"A further point Cyprian makes [Ep 63:13] is that, when Christ suffered for us and thus offered His sacrifice, we were in Him inasmuch as He was bearing our sins. Thus in His physical body and blood the people of God were being offered to the Father.
“In the eucharist there is a parallel union between Christ and His people, so that the rite is in effect the offering of the whole Church, both its Head and the faithful who in it have been made one with Him.” (Kelly, page 215-216)
That should do it.

I do not know how you can get ‘symbolical’ out of all that.
Let me say, I appreciate Craig, I love Craig’s debates, but I do not think he is looking too deeply into this. As I said, he is relying on Schaff (and others who quote Schaff) without going further. Kind of a ‘blind spot’ in his evangelical apologetics, unfortunately. But I recommend ALL his debates with atheists on the existence of God, and resurrection. In my opinion, he wins them all, with few exceptions (perhaps Tabash, or Shelly Kagan on morality, or Ray Bradley on hell, some say he ‘lost’ those but even these were ‘close’).
PhilVaz Apologetics