Χθονίας βροντάς

"Celebrate [his] earth-shaking thunderclaps". Meaning sing a hymn. "Earth-shaking" [meaning] frightening. For they trace the genealogy of all terrible things to the earth. But others [see this as thunderclaps] that bring about a loud rumble; or those coming from the earth; for when the earth rumbles, it sends the sound up into the sky, and men think that such thunderclaps come out of the sky; or [meaning] those that are heard near the earth, or those that shake the earth.¹
Also [sc. attested is the nominative singular] 'earth-shaking thunderclap'.² Also [sc. attested is] 'Chthonios Zeus', [meaning] he who is below the earth.³