reject the flesh and blood of Jesus by letting it pass by. And why? Because of a whack speculative doctrine about two classes of believers.
Joen B75 in the OP:
there is actually nothing wrong with classes of believers, such as the other sheep, which are the gentile Christians. or with the different roles in the congregations.
what is wrong that some should be excluded from the symbols of life, be it everlasting or immortal.
like in the Israel of Old as in the Israel of God,
all are in the covenants, Mosaic or New. , only a few in the class of priests or kings.
all partook of the life giving food and drink.
all carried their little stakes.