White in the blood of the Lamb. That is, they have been cleansed and purified from sin, by the death, merits, and grace of Christ crucified. (Witham) --- The whole of this verse must be understood in a mystical sense, for we are said to make our garments white in the blood of the Lamb, when we enter into his Church by baptism, or wash away our sins by penance or martyrdom. (Calmet)

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