These contained incontrovertible evidence that refuted the false claims of Catholicism.
How did you miss these writings on the Holy Eucharist?
St. Ignatius of Antioch (c.110AD): They [i.e. the Gnostics] abstain from the Eucharist and from prayer, because they do not confess that THE EUCHARIST IS THE FLESH OF OUR SAVIOR JESUS CHRIST, flesh which suffered for our sins and which the Father, in his goodness, raised up again. (Letter to Smyrnians 7:1)
St. Justin the Martyr (c. 100 - 165AD)For not as common bread nor common drink do we receive these; but since Jesus Christ our Savior was made incarnate by the word of God and had both flesh and blood for our salvation, so too, as we have been taught, the food which has been made into the Eucharist by the Eucharistic prayer set down by Him, AND BY THE CHANGE OF WHICH our blood and flesh is nourished, IS BOTH THE FLESH AND THE BLOOD OF THAT INCARNATED JESUS. (First Apology, 66)
How about St. Irenaeus of Lyons ? (c. 140 - 202 AD) When, therefore, the mixed cup and the baked bread receives the Word of God and BECOMES THE EUCHARIST, THE BODY OF CHRIST, and from these the substance of our flesh is increased and supported, how can they say that the flesh is not capable of receiving the gift of God, WHICH IS ETERNAL LIFE -- flesh which is nourished BY THE BODY AND BLOOD OF THE LORD…receiving the Word of God, BECOMES THE EUCHARIST, WHICH IS THE BODY AND BLOOD OF CHRIST… (Against Heresies 5:2:2-3)
And these are but only three examples that solidifies the orthodox Catholic teaching that exists on this particular issue today. If you do not accept this teaching on this basic truth of Christianity then it is you who have strayed from the truth, not us.