Mark 9:15

15 and immediately, all the multitude having seen him, were amazed, and running near, were saluting him.

Mark 9:15 Meaning and Commentary

Mark 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.

Mark 9:15 In-Context

13 But I say to you, That also Elijah hath come, and they did to him what they willed, as it hath been written of him.'
14 And having come unto the disciples, he saw a great multitude about them, and scribes questioning with them,
15 and immediately, all the multitude having seen him, were amazed, and running near, were saluting him.
16 And he questioned the scribes, `What dispute ye with them?'
17 and one out of the multitude answering said, `Teacher, I brought my son unto thee, having a dumb spirit;
Young's Literal Translation is in the public domain.