1 Corinthians 10:16-18 New Life Version (NLV)
16 When we give thanks for the fruit of the vine at the Lord’s supper, are we not sharing in the blood of Christ? The bread we eat at the Lord’s supper, are we not sharing in the body of Christ? 17 There is one bread, and many of us Christians make up the body of Christ. All of us eat from that bread.
18 Look at the Jews. They ate the animals that were brought to God as gifts in worship and put on the altar. Did this not show they were sharing with God?