Plutarch, Aemilius Paulus
Bernadotte Perrin, Ed.

24. Now, the Macedonians are always said to have been lovers of their kings, but at this time, feeling that their prop was shattered and all had fallen with it, they put themselves into the hands of Aemilius, and in two days made him master of all Macedonia. And this would seem to bear witness in favour of those who declare that these achievements of his were due to a rare good fortune. And still further, that which befell him at his sacrifice was a token of divine favour. When, namely, Aemilius was sacrificing in Amphipolis, and the sacred rites were begun, a thunderbolt darted down upon the altar, set it on fire, and consumed the sacrifice with it. [2] But an altogether more signal instance of divine favour and good fortune is seen in the way the rumour of his victory spread. For it was only the fourth day after Perseus had been defeated at Pydna, and at Rome the people were watching equestrian contests, when suddenly a report sprang up at the entrance of the theatre that Aemilius had conquered Perseus in a great battle and reduced all Macedonia. [3] After this the rumour spread quickly among the multitude, and joy burst forth, accompanied by shouts and clapping of hands, and prevailed in the city all that day. Then, since the story could not be traced to any sure source, but seemed to be current everywhere alike, for the time being the rumour vanished into thin air; but when, a few days afterwards, they were clearly informed of the matter, they were astonished at the tidings which had reached them first, seeing that in the fiction there was truth.