This began as a way of exploiting the many listings in my index for the subject Miracles. There were too many to use, so I concentrated on the miracles mentioned in three chapters of Mark (as a kind of counterpart to the teachings from three chapters in Matthew) plus the resurrection, the miracle par excellance. The outtakes may eventually coalesce into a sequel.
The songs, together with other Biblical verses that they juxtaposed beside the miracle stories, defined the points to be made, although Colin Brown's Miracles probably had some influence. (He well emphasizes that miracles were -- and must still be -- much more, and much less, than the apologetic tour de force we may carelessly mistake them for, though the apologetic is essential in its own way.)
One may notice that the reading from Luke 8 is parallel to a paragraph within this section of Mark. I was reading the section from Mark, carefully trying to condense the reading as much as possible while retaining the point, when it occurred to me that Luke had already done that. But the selection and arrangement of events is Mark's.
It has been noted that the outline of Mark presents a series of events, followed by a call: Jesus repeatedly calling his disciples to follow him further. It seemed fitting to retain the format in this lesson, reflecting the progress of the pathway of Jesus, from a indubitable historical event to an inescapable future demand.