Kea hates it when I talk shorthand, but under stress it is easier to work from aphorism to aphorism without the logic steps in between. Christ is talking about his unity with God, and how his actions are within the work of God, and his apparent trial and death is an eternal victory.
But it is shorthand.
And he needed to see the glory, because this was a bitter part of his life.
So when we consider that we are commanded to love as he did, we need to know at times that will hurt. The loss of a single soul from the congregation will make us mourn.
Yes, we will triumph with the victories: but this is a battle, and we will grieve the casualties
31 When he had gone out, Jesus said, “Now is the Son of Man glorified, and God is glorified in him. 32 If God is glorified in him, God will also glorify him in himself, and glorify him at once. 33 Little children, yet a little while I am with you. You will seek me, and just as I said to the Jews, so now I also say to you, ‘Where I am going you cannot come.’ 34 A new commandment I give to you, that you love one another: just as I have loved you, you also are to love one another. 35 By this all people will know that you are my disciples, if you have love for one another.”