Charles Ellicott Commentary Mark 9:1

"And he said unto them, Verily I say unto you, There are some here of them that stand [by], who shall in no wise taste of death, till they see the kingdom of God come with power." — Mark 9:1 (ASV)

And He said to them.—The division of the chapters is obviously wrong. The verse ought to come, as in St. Matthew and St. Luke, in immediate connection with the preceding discourse. The present arrangement may have been made with a view to connecting it with the Transfiguration, as that which was the fulfillment of the promise; but if so, it was based on what is at least a doubtful interpretation. (See Note on Matthew 16:28.) The form of the words in St. Mark agrees with St. Luke’s report, until they shall see the kingdom of God, rather than with St. Matthew’s, the Son of Man coming in His kingdom.

Come with power.—The Greek verb implies that they should see it not as coming, but as having actually come in its completeness.