v 13. So you, too, must keep watch! For you do not know the day or hour of my return.
This whole chapter of parables is a continuation of the theme of chapter 24. As Jesus sees the crucifixion looming ever closer He prepares the disciples for life beyond that as they work and wait for His coming again. The judgement He foretells is a moment of sharp clarity when earthly divisions over Him suddenly become devastatingly permanent and irreversible.