Jamieson, Fausset & Brown

Verily I say unto you, There be some standing here--"some of those standing here." which shall not taste of death, fill they see the Son of man coming in his kingdom--or, as in Mark (Mar 9:1), "till they see the kingdom of God come with power"; or, as in Luke (Luk 9:27), more simply still, "till they see the kingdom of God." The reference, beyond doubt, is to the firm establishment and victorious progress, in the lifetime of some then present, of that new kingdom of Christ, which was destined to work the greatest of all changes on this earth, and be the grand pledge of His final coming in glory. Next: Matthew Chapter 17