Mat 16:27 For the Son of man shall come in the glory of his Father with his angels;and then he shall reward every man according to his works.
Mat 16:28 Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom.
I believe that although the verses appear to be linked that they are not. IN a sense Jesus is coming into the physical kingdom when He is resurrected into a glorified body. The disciples did get to see that.
Mar 13:24 But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light,
Mar 13:25 And the stars of heaven shall fall, and the powers that are in heaven shall be shaken.
Mar 13:26 And then shall they see the Son of man coming in the clouds with great power and glory.
Mar 13:27 And then shall he send his angels, and shall gather together his elect from the four winds, from the uttermost part of the earth to the uttermost part of heaven.
Mar 13:28 Now learn a parable of the fig tree; When her branch is yet tender, and putteth forth leaves, ye know that summer is near:
Mar 13:29 So ye in like manner, when ye shall see these things come to pass, know that it is nigh, even at the doors.
Mar 13:30 Verily I say unto you, that this generation shall not pass, till all these things be done.
I believe this reamins to be seen by the generation that experiences the signs referred to in the previous verses.