Laudator Temporis Acti

Vergil, Aeneid 6.86-87 (the Sibyl speaking; tr. Allen Mandelbaum):

I see wars, horrid wars, the Tiber foaming
with much blood.

                                      bella, horrida bella
et Thybrim multo spumantem sanguine cerno.

Servius ad loc.:

86. HORRIDA BELLA quae contra hospitem cognatumque suscepta sunt, ut Latinus dicturus est <XII 31> arma impia sumpsi promissam eripui.
87. SPVMANTEM SANGVINE CERNO quasi non praedicit, sed videt quod facturus est Turnus, ut <XII 35> recalent nostro Tiberina fluenta sanguine adhuc.

I.e.:

86. SAVAGE WARS which are waged against guest and kindred, as Latinus is going to say <XII 31> I took up unholy weapons, I stole the betrothed.
87. FOAMING WITH BLOOD I SEE as if she is not prophesying but seeing what Turnus is going to do, as <XII 35> Tiber's streams are still warm with our blood.

Phlegon of Tralles, Marvels 3 (tr. William Hansen):

At that time, Rome, your harsh sufferings will all be fulfilled.
For a broad host will come that will destroy your entire land,
Make desolate your market-places, waste your cities with fire,
Fill your rivers with blood, fill also Hades,
And bring upon you slavery, piteous, hateful, and obscure.

The Greek, from Otto Keller, ed., Rerum Naturalium Scriptores Graeci Minores, Vol. I: Paradoxographi Antigonus, Apollonius, Phlegon, Anonymus Vaticanus (Leipzig: B.G. Teubner, 1877), p. 71:

καὶ τότε σοί, Ῥώμη, χαλέπ' ἄλγεα πάντα τελεῖται.
ἥξει γὰρ στρατὸς εὐρύς, ὅ σου χθόνα πάσαν ὀλέσσει,
χηρώσει δ' ἀγοράς, ἄστη δέ τε πυρπόλα θήσει,
αἴματι δὲ πλήσει ποταμούς, πλήσει δὲ καὶ Ἅιδην,
δουλoσύνην τ' οἰκτρήν, στυγερήν, ἀτέκμαρτον ἐφήσει.