Usage: 5 forms in 8 verses
Form Translated As     In Verse(s)
εβρόντησεν εβρόντησεν he thundered LXX.1Sam.2.10
εβρόντησεν thundered LXX.2Sam.22.14LXX.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 βροντάω it thunders, [Refs 5th c.BC+]; βροντάωήσαντος if it thunders, [Refs 4th c.BC+]
__II passive, to be thunderstruck, [Refs]