1 Corinthians 10:15

The chalice of benediction, which we bless,
is it not the communion of the blood of Christ?
And the bread, which we break,
is it not the partaking of the body of the Lord?
For we, being many, are one bread, one body,
all that partake of one bread.

1 Corinthians 10:21

You cannot drink the chalice of the Lord,
and the chalice of devils:
you cannot be partakers of the table of the Lord,
and of the table of devils.

(Douay Rhiems)