1 Corinthians 5:7-8

5:7 Clean out the old yeast so that you may be a new batch of dough – you are, in fact, without yeast. For Christ, our Passover lamb, has been sacrificed. 5:8 So then, let us celebrate the festival, not with the old yeast, the yeast of vice and evil, but with the bread without yeast, the bread of sincerity and truth.

1 Corinthians 9:13

9:13 Don’t you know that those who serve in the temple eat food from the temple, and those who serve at the altar receive a part of the offerings?

1 Corinthians 10:17

10:17 Because there is one bread, we who are many are one body, for we all share the one bread.

1 Corinthians 10:20

10:20 No, I mean that what the pagans sacrifice is to demons and not to God. I do not want you to be partners with demons.