At the close of Kentigernís
probation, St. Serf, at the instigation of the disciples, who were jealous
of their favoured companion, called upon him to work a still more
wonderful miracle, which, as the story tells, after earnest striving in
prayer he was, by divine aid, enabled to perform.
During his devotions it was revealed
to him that he should now go forth to fulfil his mission, which, to the
great grief of St. Serf, he lost no time in doing. The going forth of the
youthful saint is said to have been attended at the very outset with
another marvel at the ford of the Forth, by which he crossed over to the
southern shore, the account of his passage, in its earliest known form,
being made to rival that of the Israelites in the passage of the Red Sea.