Usage: 5 forms in 8 verses
Form Translated As     In Verse(s)
εβρόντησεν εβρόντησεν he thundered LXX.1Sam.2.10
εβρόντησεν thundered LXX.2Sam.22.14 • LXX.Ps.18.13
εβρόντησε lord thundered LXX.1Sam.7.10
thunders LXX.Ps.29.3
βροντήσει he shall thunder LXX.Job.37.4
will thunder LXX.Job.37.5
βροντάσ do you thunder LXX.Job.40.9

Liddell-Scott-Jones

βροντάω (brontaō) to thunder G:V

βροντάω-άω,

thunder, Ζεὺς δ᾽ ἄμυδις βρόντησε [βροντάωᾶν οὐκ ἐμὸν ἀλλὰ Διός 3rd c.BC: Callimachus Epicus “Fragmenta” 490 ">Refs 8th c.BC+]; so Βροντῶν, title of Zeus in Phrygia, [βροντάωῶν θεός">Refs], = Jupiter Tonans, [Refs 5th c.BC+]; of a seller asking too high a price, [Refs 3rd c.BC+]

__2 impersonal, χειμέρια βροντάωᾷ it thunders, [Refs 5th c.BC+]; βροντάωήσαντος if it thunders, [Refs 4th c.BC+]
__II passive, to be thunderstruck, [Refs]