1 Corinthians 10:18

10:18 Look at the people of Israel. Are not those who eat the sacrifices partners in the altar?

1 Corinthians 10:21

10:21 You cannot drink the cup of the Lord and the cup of demons. You cannot take part in the table of the Lord and the table of demons.

10:31 So whether you eat or drink, or whatever you do, do everything for the glory of God.