1 Corinthians 10:16-18 Revised Standard Version Catholic Edition (RSVCE)
16 The cup of blessing which we bless, is it not a participation[a] in the blood of Christ? The bread which we break, is it not a participation[b] in the body of Christ? 17 Because there is one bread, we who are many are one body, for we all partake of the one bread. 18 Consider the practice of Israel; are not those who eat the sacrifices partners in the altar?