Crucifixion

Crucifixion is a punishment reserved for the most heinous of crimes.

Julius Caesar gives an example what crucifixion was for

Julius Caesar was kidnapped and sold for $$$ by his Lestes captors. After he became free, Julius then crucified them. Crucifixion was a punishment reserved for the most heinous crimes, like Lestes.

See Julius Caesar Crucified Traffickers

Mark 14:51 sequence shows what crucifixion was for

Jesus is arrested in a garden at 4am with a naked (gumnos) neaniskos (boy) fleeing the scene, as he's being arrested says to the guards "why are you coming at me as if I'm a lestes", naming the most heinous crime of kidnapping/trafficking. Later is hung/crucified next to 2 other Lestes (2 other kidnapper/traffickers).

Lestes are pirates, plunderers of souls, takers of booty, kidnappers, traffickers.

See Mark 14-51 Translation from Source
See Why was Jesus Crucified

Aesop gives an example of what crucifixion is for (on a mulberry tree)

Another example of how to punish Lestes.

Aesop's Fabulae - The Lestes and the mulberry tree

157. ΛΗΙΣΤΗΣ ΚΑΙ ΣΥΚΑΜΙΝΟΣ
(1) λῃστὴς ἐν ὁδῷ τινα ἀποκτείνας ἐπειδὴ ὑπὸ τῶν παρα- τυχόντων ἐδιώκετο, καταλιπών αὐτὸν ᾑμαγμένος ἔφυγε. τῶν δὲ ἄντικρυς ὁδευόντων πυνθανομένων αὐτοῦ, τίνι με μολυσμένας ἔχει τὰς χεῖρας, ἔλεγεν ἀπὸ συκαμίνου κατα- βεβηκέναι. καὶ ὡς ταῦτα ἔλεγεν, οἱ διώκοντες αὐτὸν ἐπελ- (5) θόντες καὶ συλλαβόμενοι εἴς τινα συκάμινον αὐτὸν ἐσταύ- ρωσαν. ἡ δὲ συκάμινος ἔφη·, ἀλλ' ἔγωγε οὐκ ἄχθομαι πρὸς @1 τὸν σὸν θάνατον ὑπηρετοῦσα· καὶ γάρ, ὃν αὐτὸς φόνον ἀπειργάσω, τοῦτον εἰς ἐμὲ ἀπεμάττου.
οὕτω πολλάκις καὶ οἱ φύσει χρηστοί, ὅταν ὑπό τινων (10) ὡς φαῦλοι διαβάλλωνται, κατ' αὐτῶν πονηρεύεσθαι οὐκ

157. THE LĒISTĒS AND THE MULBERRY TREE
A lēistēs, having killed someone on the road, when he was being pursued by those who happened to be present, left him behind bloodied and fled.
When those travelling toward him asked why he had his hands stained, he said that he had climbed down from a mulberry tree.
And while he was saying these things, those pursuing him came upon him, seized him, and crucified him upon a certain mulberry tree.
And the mulberry tree said:
“But I, for my part, am not distressed to serve toward your death; for the very murder which you yourself committed, you were wiping off upon me.”
Thus frequently even those who are good by nature, whenever they are slandered by certain people as wicked, do not [object to] acting adversely against them…

ἐσταύρωσαν is aorist for σταυρόω, to crucify, it can also mean to "fence with pails", or stakes

Terms:

λῃστής - lēistēs: plunderer, robber, raider, brigand; potentially a trafficker or predatory taker in context.
ᾑμαγμένος - bloodied, covered in blood.
μολυσμένας … τὰς χεῖρας - having the hands stained/defiled.
ἐσταύρωσαν - they fastened/crucified him upon it.
ἀπεμάττου - you were wiping off, smearing away, or transferring by wiping.
ὑπηρετοῦσα πρὸς τὸν σὸν θάνατον - serving as an instrument toward your death.

Mulberry Tree:

συκάμινος - mulberry tree
ἀπὸ συκαμίνου καταβεβηκέναι - “to have come down from a mulberry tree”
εἴς τινα συκάμινον αὐτὸν ἐσταύρωσαν - “they fastened/crucified him onto a certain mulberry tree”
ἡ δὲ συκάμινος ἔφη - “and the mulberry tree said”

the noun συκάμινος (sykáminos) is the name of a particular kind of tree-not a generic word meaning “tree.”

ἡ συκάμινος - the sykaminos
- mulberry tree, especially the black mulberry (Morus nigra)
- Possible alternative in some geographical and later contexts: sycamore-fig (Ficus sycomorus)
- alternate, works for all “sycamine tree”