The New John Gill Exposition of the Entire BibleMark 9:15
And straightway all the people, when they beheld him…
As soon as ever they saw him, to many of whom, especially those that
followed him out of Galilee, he was personally known.
Were greatly amazed;
either that he should come at that juncture, to
assist and relieve his disciples, when the Scribes were triumphing
over them, as some think; or rather, as others, on account of that
remaining lustre and glory which was on his countenance, through his
transfiguration, and not yet wholly gone off; like that which was on
the face of Moses, when he came down from Mount Sinai:
and running to him, saluted him;
wishing him all peace and
prosperity, expressing their great joy at his coming to them; which
was very desirable by them, and exceedingly pleasing to them, and
especially at this time, as both their words and gesture showed.