John Chrysostom
"For by one Spirit," he says, "we were all baptized into one body, whether Jews or Greeks, whether slaves or free" (1 Cor 12:13). The meaning of his words is this: one Spirit formed us into one body and regenerated us, because one person was not baptized by one Spirit, and another by another.
Not only is the Spirit who baptized us one, but that into which He baptized us, that is, the purpose for which He baptized us, is also one. We were not baptized in order to constitute different bodies, but so that all of us should precisely constitute one body in relation to one another.
That is, we were baptized so that all of us might be one body. Thus both He who formed us is one, and that into which He formed us is one.
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The Apostle did not say, "that we might belong to one body," but "we all into one body." He always strives to use the most precise expressions. He also said well, "we all," including himself.
'I, the Apostle, have no advantage over you in this respect,' he says. 'You are the body as I am, and I as you are. We all have one and the same Head and were born by the same birth. Therefore we constitute one and the same body.'
But why, he says, do I point to Jews? God also brought the Gentiles, who were so far from us, into the composition of one body. Therefore, after saying "we all," he does not stop there, but adds: "whether Jews or Greeks, whether slaves or free."
If we, who were formerly so far from one another, have been united and become one, then much more, after union, ought we not to grieve or be despondent, since there is no longer room for difference.
If He has counted Gentiles and Jews, slaves and free, worthy of one and the same thing, will He divide us after having made us worthy? The very communication of gifts serves toward the most perfect union.
"And all were made to drink of one Spirit. For the body is not one member, but many" (1 Cor 12:13-14). That is, we all approach one and the same mystery and partake of one and the same table.
Why, then, did he not say, "we are nourished by one and the same body and drink one and the same blood"? Because by naming the Spirit, he indicated both, the blood and the flesh. Through both we are made to drink of one Spirit.
Nevertheless, it seems to me that he is speaking here of that descent of the Spirit which is accomplished over us at baptism, even before the mystery of communion.
He said, "were made to drink," because this figurative expression is highly fitting to the present subject. It is as though he were speaking of plants and a garden, where all trees are watered by one and the same spring, with one and the same water.
In precisely this way, he says, we are all made to drink of one and the same Spirit and are counted worthy of one and the same grace.
Therefore, if the one Spirit formed us and joined us all into one body, and this is what the words "were baptized into one body" mean, and if He bestowed one table and communicated one and the same watering to all. And this is what the words "were made to drink of one Spirit" mean, and if He joined together those so far apart from one another, and the many constitute a body only when they become one, then what difference are you insisting on?
If you say that the members are many and different, know that precisely this is wonderful and is the special property of the body: in it the many and different constitute one. If there were no multitude, it would not be so marvelous and wondrous that the body is one. Or rather, there would then be no body at all.