In the tomb of Saint John many find nothing but manna...

...for some men say his body was translated to Paradise.  And you must understand that Saint John had his grave made there while he was alive and laid himself in it alive; and therefore some say he did not die, but rests there until the Day of Judgement.  And indeed there is there a great marvel, for men can see the earth of the tomb many a time stir and shift, as if there were a living thing underneath.