Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

The disciples had taken many meals from the hand of Christ; why then did the last supper come to be distinguished? It is thus evident that by the heavenly bread is meant not this material bread but the divine sustenance of the spiritual body of Christ, that is, the divine grace and the heavenly perfections of which His disciples partook and with which they were filled (21:8)

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