Is it moral for God to punish us?

Well, Wikipedia dates the Gospel of Mary as "c. 30—180 CE?" I don't know where they're getting that from, but I presume there's some sort of scholarship behind that rather than someone just pulling it out of his ass. We could look into that if you like, but it seems on the face of it that there were some early non-canonical gospels.

"Truly I tell you, some who are standing here will not taste death before they see the Son of Man coming in his kingdom."

Well, that made me laugh out loud.I am infallible. I predict that today an elephant will fall on you. If that doesn't happen --- well, I'm infallible, so I must not have meant "an elephant will fall on you" in the sense of "you will be the subject of the unchecked descent of a pachyderm". In that case we know that I must have meant something else, and you may speculate on what.Of course, if all my statements, no matter how apparently plain and simple, may in fact be obscure cryptic puzzles for the delight of hermeneuticians, then there's hardly any point in my making them. And the same applies to Jesus. If, by "the Son of Man coming in his kingdom" he didn't mean the Son of Man coming in his kingdom, then what reason do we have to think that when he said "love thy neighbor as thyself" he meant that you should love your neighbor as yourself? Maybe he meant that you should buy a bassoon and play it aggressively at squirrels.

So, that was it? The coming of the kingdom consisted of nothing more than Jesus' fan club saying nice things about him? Traditionally people have thought of it as being something more impressive. Also, they've been praying for it to happen for the last two millennia without realizing that it had been and gone. Perhaps Jesus could have clarified this a little. For example, when the good thief said "Jesus, remember me when you come into your kingdom", he could have answered, "Actually I already did that, it was no big deal."