“As the lightning
Comes from the east,
As far as the west.
Of the Son of Man.
Wherever the corpse is,
There the vultures
ὥσπερ γὰρ ἡ ἀστραπὴ ἐξέρχεται ἀπὸ ἀνατολῶν καὶ φαίνεται ἕως δυσμῶν, οὕτως ἔσται ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου·
ὅπου ἐὰν ᾖ τὸ πτῶμα, ἐκεῖ συναχθήσονται οἱ ἀετοί.
This is something similar in Luke, chapter 17:23, about the Son of Man coming like lightening, but in a more succinct way. Jesus said that as the lightning comes from the east (ὥσπερ γὰρ ἡ ἀστραπὴ ἐξέρχεται ἀπὸ ἀνατολῶν) but flashes or shines in the west (καὶ φαίνεται ἕως δυσμῶν), so the Parousia or the second coming of the Son of Man will happen (οὕτως ἔσται ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου). Wherever the corpse is (ὅπου ἐὰν ᾖ τὸ πτῶμα), there the vultures gather (ἐκεῖ συναχθήσονται οἱ ἀετοί). The Son of Man is a clear reference to Jesus in his return, the Parousia, who would return like a flash of lightening. The vultures or eagles were a reference to the Roman soldiers with their eagle symbols.