See the notes at Matthew 26:47-57.
Master, Master - As if expressing great joy that he had found him again.
A certain young man - Who this was we have no means of determining, but it seems not improbable that he may have been the owner of the garden, and that he may have had an understanding with Jesus that he should visit it for retirement when he withdrew from the city. That he was not one of the apostles is clear. It is probable that be was roused from sleep by the noise made by the rabble, and came to render any aid in his power in quelling the disturbance. It is not known why this circumstance is recorded by Mark. It is omitted by all the other evangelists. It may have been recorded to show that the conspirators had instructions to take the “apostles” as well as Jesus, and supposing him to be one of them, they laid hold of him to take him before the high priest; or it “may” have been recorded in order to place his conduct in strong and honorable contrast with the timidity and fear of the disciples, who had all fled. Compare the notes at Matthew 26:56.
A linen cloth cast about his naked body - He was roused from sleep, and probably threw around him, in his haste, what was most convenient. It was common to sleep in linen bed-clothes, and he seized a part of the clothes and hastily threw it round him.
The young men - The Roman soldiers. They were called “young men” because they were made up chiefly of youth. This was a Jewish mode of speaking. See Genesis 14:24; 2 Samuel 2:14; Isaiah 13:18.
Laid hold on him - Supposing him to be one of the apostles.