ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
Cretheus, of Iolcus, the husband of Tyro, Od. 11.237, 258.