The devotion to Saint Mark soon outstripped that to the previous saint, Theodore, and the great basilica was eventually raised in his name. The ducal palace needed a shrine to bolster its legitimacy, and it could be suggested that the shrine required a palace; the covenant between them instantly magnified both the status of the doge and the power of the community. If anyone were rash enough to question the account of the divine prize, according to a later Venetian historian, then “let him come to Venice and see the fair church of Monsignor S. Marco, and look in front of this fair church” at the mosaics that faithfully tell the whole story. This may not be evidence that would stand up in a court of law, but it was enough testimony for the pious and the credulous. The mosaics were only the most prominent examples of the cult of Saint Mark. On the great arch, above the right-hand singing-gallery of the basilica, can be found the scene of the embarkation of Mark’s body; there is the ship sailing for Venice; there is the reception of the body in the city. These are mosaics from the end of the twelfth century, made luminous by the decorum and formality of the Byzantine tradition. Mosaics are the filigree upon the silver surface of Venice.
From the beginning, the cult of Saint Mark was as much a secular as a sacred affair. He became the icon and emblem of Venice (together with his winged lion), but he was always associated with the doge rather than the bishop. The open theft of the relic was not an issue. There soon grew up a legend that Mark had been bishop of Aquileia, to the north of the lagoon, before ever becoming bishop of Alexandria. And in any case the fact that the transition had been made with the blessing of Mark himself proved its benefaction. God’s will had been done. Otherwise the theft would not have succeeded. It is one of those circular arguments that are very difficult to break. In the thirteenth century another layer of the story was added. It was claimed that Saint Mark, on one of his missions, sought refuge from a storm and providentially took shelter on the island of Rialto. Here, in the future Venice, an angel appeared to him and proclaimed
There are in any case many problems with the original account, not the least serious being the fanciful chain of events that led to the
Many other consequences flowed from the
It is important, too, that the saint arrived by sea. The sea had become Venice’s true element, and there was no better way of sanctifying it than by claiming it as the shining path of divine protection. The mosaics in the basilica emphasise the image of the ship upon the waves. In a later legend a trio of saints—Mark, George and Nicholas—commandeer a fishing vessel and quell a storm in the lagoon that has been brewed by demons. On his disembarkation Mark presents a gold ring to the fisherman, who in turn gives it up to the doge. Power over the sea is transferred from saint to fisherman to leader. It is one of the formative myths of Venice, engaged in its continual fight against the waters.