He was praying fervently, when suddenly a brilliant light illuminated the whole place, and I heard a voice calling him by name, while at the same moment the roof opened, and a bright form appeared, holding out a sheet resembling that in which he had wrapped the body of Jesus.

Joseph grasped it with both hands, and was drawn up to the opening, which closed again as soon as he had passed through; and the apparition disappeared the instant he was in safety at the tope of the tower.

I know not whether it was our Lord himself or an angel who thus set Joseph free.
He walked on the summit of the wall until he reached the neighbourhood of the Cenaculum, which was near to the south wall of Sion, and then climbed down and knocked at the door of that edifice, as the doors were fastened.

The disciples assembled there had been much grieved when they first missed Joseph, who they thought had been thrown into a sink, a report to that effect having become current.

Great, therefore, was their joy when they opened the door and found that it was he himself; indeed, they were almost as much delighted as when Peter was miraculously delivered from prison some years after.