Iliad 13.237–238
Poseidon, in Thoas' voice, to Idomeneus
συμφερτὴ δʼ ἀρετὴ πέλει ἀνδρῶν καὶ μάλα λυγρῶν,
νῶϊ δὲ καί κʼ ἀγαθοῖσιν ἐπισταίμεσθα μάχεσθαι.
Even weak men’s prowess has force when it is joined,
and we two know how to fight even against brave men.