Didn’t you read post 124/125
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Yes.
“The cup of blessing which we bless, is it not a participation in the blood of Christ? The bread which we break, is it not a participation in the body of Christ? Because there is one bread, we who are many are one body, for we all partake of the one bread.” -1 Cor. 10:16-17
THE DIDACHE - “Let no one eat and drink of your Eucharist but those baptized in the name of the Lord; to this, too the saying of the Lord is applicable: ‘Do not give to dogs what is sacred’” and “On the Lord’s own day, assemble in common to break bread and offer thanks; but first confess your sins, so that your sacrifice may be pure. However, no one quarreling with his brother may join your meeting until they are reconciled; your sacrifice must not be defiled. For here we have the saying of the Lord: ‘In every place and time offer me a pure sacrifice; for I am a mighty King, says the Lord; and my name spreads terror among the nations.’”
ST. IGNATIUS OF ANTIOCH - “I have no taste for the food that perishes nor for the pleasures of this life. I want the Bread of God which is the Flesh of Christ, who was the seed of David; and for drink I desire His Blood which is love that cannot be destroyed.”
ST. JUSTIN MARTYR - “This food we call the Eucharist, of which no one is allowed to partake except one who believes that the things we teach are true, and has received the washing for forgiveness of sins and for rebirth, and who lives as Christ handed down to us. For we do not receive these things as common bread or common drink; but as Jesus Christ our Savior being incarnate by God’s Word took flesh and blood for our salvation, so also we have been taught that the food consecrated by the Word of prayer which comes from him, from which our flesh and blood are nourished by transformation, is the flesh and blood of that incarnate Jesus.”
From “The Fundamentals of Catholic Dogma” by Ludwig Ott, Ph.D., 4th Edition, 1960, pp. 372-373:
"The Reformers were not uniform in the agreement (of the Real Presence):
Luther: Admitted the Real Presence, but only during the celebration of Holy Communion. In contrast to the Catholic doctrine of Transubstantiation, he assumed co-existence of the true Body and Blood of Christ with the substance of the bread and wine (consubstantiation).
Zwingli: Denied the Real Presence, and declared the bread and wine to be mere symbols of the Body and Blood of Christ. Holy Communion is, according to him, only a commemoration of our Redemption through the death of Christ, and a confession of our faith by the community.
Calvin: Took a middle path. He rejected the substantial presence of the body and blood of Christ, but accepted a presence of power (dynamic presence). Through the use of bread and wine, a power proceeding from the transfigured Body of Christ in Heaven, is conferred on the faithful.
Liberal Protestantism: Of the present day denies that Christ intended to institute the Eucharist, and maintains that Jesus’ Last Supper was a mere parting meal.
Even non-Catholics cannot make up their minds. Hmmmm…I’ll stick with the authority of the Church established by Christ.