My (poor) joke was that they were among the trees setting up (planting) Christmas trees.
χθές δὲ εἶδον δένδρον μόνον ἑστὸς παρὰ τῇ ὁδῷ. Yesterday I saw a tree that stood alone by the road.
καὶ μετὰ χρόνον οὐ μακρὸν ἐκεῖ οὐκέτ᾽ εἱστήκει τὸ δένδρον, κατέκοψα γὰρ αὐτόν. After after a bit, it no longer stood there, for I cut it down.
τοῦτον δὲ κορμὸν Γελὸν ἄγοντες οἴκοσε ἐστήσαμεν τὸ δένδρον ἐν τῷ οἴκῳ. Bringing that Yule log home, we stood up the tree in our house.
ἐσταθὲν μὲν πάλιν γέλοιον φαίνεται ἀρτηθέντων αὐτοῦ λύχνων. Stood again it looks jolly with lights hung from it.
ἔστημεν δὲ ἡμεῖς ἐπιβλέποντες αὐτὸ χάριν ἔχοντες. And we stood and looked at it with gratitude.
οὕτω δὴ ἤκουσάς μου τὸν μῦθον τοῦ δένδρου ἑστῶτος ἐν τῇ ἡμῶν οἰκίᾳ. And so you’ve heard from me the story of the tree that stands in our home.
καὶ τὸ τῷ ἵστημι χρῆσθαι ἔχεις. And you have the use of “ἵστημι”.
(Hopefully I didn’t make too many blunders, of course.)
- What difference is there in the meaning of ἕστασαν (pluperfect) and ἔστησαν (aorist)?
3rd person plural has an unfortunate collision here:
ἔστησαν is either 1st aorist (ἔστησα, ἔστησας, ἔστησε, ἐστήσαμεν, ἐστήσατε, ἔστησαν), or 2nd aorist (ἔστην, ἔστης, ἔστη, ἔστημεν, ἔστητε, ἔστησαν)
But the short rundown of the tenses is that perfect/pluperfect/aorist for the “I am standing up on my own two feet” work like with other verbs in Greek. Perfect = state (I am standing), pluperfect = state in past time (I was standing), aorist = action (I stood). Obviously they bleed into each other a bit, and the difference really depends whether it’s an act or state in the author’s mind:
ἐπεὶ δὲ ἀνέβη καὶ ἔστη ἀποβλέπων ᾗπερ ἔμελλε πορεύεσθαι, βροντὴ δεξιὰ ἐφθέγξατο…
And when he went up and stood, looking upon the route he meant to go, thunder sounded at his right…
καὶ στήλη ἕστηκε παρὰ τὸν ναὸν γράμματα ἔχουσα· ΙΕΡΟΣ Ο ΧΩΡΟΣ ΤΗΣ ΑΡΤΕΜΙΔΟΣ…
And a stele stands before the temple bearing the words: THIS LAND IS SACRED TO ARTEMIS…
- The semantics seems to be “I have stood up (got to my feet)”=“I am standing.” Does that still work for things that don’t have feet and don’t get up, like the trees in your joke? (And of course I didn’t really get the joke.)
It’s just the difference between transitive forms (a crane stands up a flag pole, pg. 84 in your grammar), and intransitive (a statue stands somewhere, pg. 86).