1 Corinthians 5:7-8

7Cleanse out the old leaven that you may be a new lump, as you really are unleavened. For Christ, our Passover lamb, has been sacrificed. 8Let us therefore celebrate the festival, anot with the old leaven, bthe leaven of malice and evil, but with the unleavened bread of sincerity and truth.

1 Corinthians 9:13

13Do you not know that cthose who are employed in the temple service get their food from the temple, and those who serve at the altar share in the sacrificial offerings?

1 Corinthians 10:17

17Because there is one bread, we who are many are done body, for we all partake of the one bread.

1 Corinthians 10:20

20No, I imply that what pagans sacrifice ethey offer to demons and not to God. I do not want you to be participants with demons.
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