μεγάλῃ φωνῇ

From LSJ

αὔριον ὔμμε‎ πάσας ἐγὼ λουσῶ Συβαρίτιδος ἔνδοθι λίμνας‎ → tomorrow I'll wash you one and all in Sybaris lake

Source

Greek > English (Woodhouse)

in a loud voice