Gregory the Great

About this twin glory it is written, "they will possess double in their own land." This is written concerning the souls of the saints, for single white cloaks are given to them, and it is said that they might have rest a short time until the number of their colleagues and brothers is filled up. So they take now single cloaks, but they will have double cloaks on the day of judgment; for the first is in the way of souls only, but later they will rejoice in the glory of souls and bodies together.