What's the Organizing Principle of the Farewell Discourses?

Am, but what ties together these seemingly desperate elements am in the story. Am last week, i believe marty called this section in particular dense a few timesmaybe more than a few times,. A to what's jesus doing here? We're bouncing from suffering and joy, and i'm leaving, i'm coming back. And we had the paraclete earlier, a, god loves you. That's always nice. But also, things are terrible, but i've conquered the world... I would love atone read on that. Is he frustrated or is he hopeful? I've no idea. So we'll see which way they go.