Do not give what is holy to the dogs…
Do not cast your pearls before swine…
The bread and wine of the communion is a physical representation of the death of Jesus. Those who partake of this communion need to understand that the wine and the bread are holy (separated unto God). Some people at Corinth did not discern that the wine and the bread were holy. They counted the wine and the bread as a common thing. They drank and ate it as common food. Some to excess. This was what eating and drinking in an unworthy manner is. It is not whether you have sin, unconfessed or un repented. It is, do you not see the blood and body of Jesus?
…the dogs return to their vomit
…the swine trample underfoot
🙂