Origen

“ And in the case of the bread of the Lord, accordingly, there is advantage to him who uses it, when with undefiled mind and pure conscience he partakes of the bread. And so neither by not eating, I mean by the very fact that we do not eat of the bread which has been sanctified by the word of God and prayer, are we deprived of any good thing, nor by eating are we the better by any good thing; for the cause of our lacking is wickedness and sins, and the cause of our abounding is righteousness and right actions ”

“ After this, it is worth while to look at the phrase which has been assailed in a sophistical way by those who say [1] that the God of the law and the God of the Gospel of Jesus Christ is not the same; for they say that the heavenly Father of Jesus Christ is not the husbandman of those who think that they worship God according to the law of Moses. Jesus Himself said that the Pharisees, who were worshipping the God who created the world and the law, were not a plant which His heavenly Father had planted, and that for this reason it was being rooted up. ”

“ Now some one when dealing with the passage might say, that just as “not that which entereth into the mouth defileth the man,” [18] of even though it may be thought by the Jews to be defiled, so not that which entereth into the mouth sanctifieth the man, even though what is called the bread of the Lord may be thought by the simpler disciples to sanctify. ”