ὑπηρετεῖν
From LSJ
ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς → a violent flare-up falling on the ground with great force, thunder and lightning
Greek > English (Woodhouse Verbs Reversed)
(see also ὑπηρετέω): absolutely, assist, help, serve, subserve, be a servant, do service to, minister to, wait on