Since “the cup ” represents the new covenant, only those in the new covenant partake of the emblems.
وَبِمَا أَنَّ « ٱلْكَأْسَ » تُمَثِّلُ ٱلْعَهْدَ ٱلْجَدِيدَ ،‏ فَلَا يَجِبُ أَنْ يَتَنَاوَلَ مِنَ ٱلرَّمْزَيْنِ سِوَى ٱلَّذِينَ هُمْ فِي ٱلْعَهْدِ ٱلْجَدِيدِ .‏