You must be using an unusual edition of the NT. Mine (RSV) says, for instance, and with emphasis added ─
Mark 9:1 And he said to them, “Truly, I say to you, there are some standing here who will not taste death before they see that the kingdom of God has come with power.”
Mark 13:28 “From the fig tree learn its lesson: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near. 29 So also, when you see these things taking place, you know that he is near, at the very gates. 30 Truly, I say to you, this generation will not pass away before all these things take place.
Matthew 10:23 When you are persecuted in one place, flee to another. Truly I tell you, you will not finish going through the towns of Israel before the Son of man comes.
Matthew 16:28 Truly, I say to you, there are some standing here who will not taste death before they see the Son of man coming in his kingdom."
Matthew 24:32 “From the fig tree learn its lesson: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near. 33 So also, when you see all these things, you know that he is near, at the very gates. [/b]34 Truly, I say to you, this generation will not pass away till all these things take place.[/b]
Luke 9:27 But I tell you truly, there are some standing here who will not taste death before they see the kingdom of God.”
I'm not sure how you managed to miss all of those. Perhaps you might make a booking with your optometrist?