Since Rey likely isn't a Jedi...

"ThewhiteonE;c-1022163" wrote:
I'm guessing a lot of you's didn't see the books in the trailer with light shining onto them did you?

What I believe is going to happen is that Luke found the original teachings of the Jedi & by doing so, saw how flawed the Jedi had become in their practices. When he says "I only know one truth... It's time for the Jedi to end", he's not ending the Jedi per say, he's simply going back to the roots of all Jedi & rectifying where the Jedi went wrong (becoming arrogant & blind to the treachery & corruption of the senate, so forth).

"Journal of Whillis" wrote:
First comes the day
Then comes the night.
After the darkness
Shines through the light.
The difference, they say,
Is only made right
By the resolving of gray
Through refined Jedi sight.

This quote of the Journal of Whillis makes me believe that they're going to have Gray Jedi come into the story from this point on. Meaning, Luke (Seen wearing a grey robe in the trailer & the end of SW-TFA) has studied the original teachings of the Jedi & is going to be walking that fine line between light & darkness... The Gray... & in so doing is going to teach Rey how to be a true force wielder & so come the end of the "Jedi". As such.

I might be wrong here but I think this is going to play a big part in the movie. Reason being, if memory serves, didn't Han say that after Kylo Ren rebeled again Luke, that Luke went looking for the first Jedi temple or something like that?

I can't say for sure but I got a strong feeling that this is partially the plot for why Luke said what he said at the end of the trailer.