Revelation 10:3

3Andκαὶhe cried outἔκραξενin a voiceφωνῇloudμεγάλῃasὥσπερa lionλέωνroarsμυκᾶται.Andκαὶwhenὅτεhe cried outἔκραξεν,soundedἐλάλησανtheαἱsevenἑπτὰthundersβρονταὶtheτὰςof themselvesἑαυτῶνvoiceφωνάς.

And he cried out in a loud voice as a lion roars. And when he cried out, the seven thunders spoke their voices.