Adventus, which means “arrival”, specifically indicates an imperial visit to a city. It was a solemn event, governed by a precise ceremonial code for all citizens, who would express their assent to the emperor and encounter a sense of their collective identity.
In the microcosm of the late antiquity residence of Piazza Armerina, the vestibule mosaic could refer to this celebration due to the details of the clothing and the presence of branches, candles and the diptych on which a text may have been written to be recited (panegyric) or sung (hymn) as an acclamation for the dominus.