From Gethsemani Abbey

mk040603: " Father McKenzie says that there is no Hebrew word for 'thunder'. They use voice instead. Which leads to a lot of happy confusion. It would take no great imagination for any of us to think of a voice of God when we hear thunder. That an earlier people did so is no surprise. But it does seem clear that at least on three occasions there was a real Voice, not merely thunder, and all were at very significant times in the life of Jesus. "