The Holy Eucharist is what distinguishes the True Church from pretenders.
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There is no support for that idea found in the Scriptures! Instead, here is what Jesus said:
'' By this all will know that you are my disciples—if you have love among yourselves.” - John13:35
Christendom lost all credibility during the 2 world wars.
(John 17:14-16) I have given your word to them, but the world has hated them, because they are no part of the world, just as I am no part of the world. “I do not request that you take them out of the world, but that you watch over them because of the wicked one. They are no part of the world, just as I am no part of the world.
Genuine Christians do not take sides in the world's conflicts.
(John 18:36) Jesus answered: “My Kingdom is no part of this world. If my Kingdom were part of this world, my attendants would have fought that I should not be handed over to the Jews. But as it is, my Kingdom is not from this source.”