1 Corinthians 10:16-18

10:16 Is not the cup of blessing that we bless a sharing in the blood of Christ? Is not the bread that we break a sharing in the body of Christ? 10:17 Because there is one bread, we who are many are one body, for we all share the one bread. 10:18 Look at the people of Israel. Are not those who eat the sacrifices partners in the altar?