John Gills Exposition of the Bible Commentary - Exodus 19:19
And when the voice of the trumpet sounded long ,.... Not in one continued tone, as before, Exodus 19:13 , where a different word is used, and when it decreased, and was about to cease, which was to summon the people to attend; but now they were come to the foot of the mount, and this sounding was a preparation to the giving of the law unto them, and was not one continued even tone: but waxed louder and louder; or, "going, and exceeding strong"; or, "strengthening itself exceedingly" F24 ... read more
Matthew Henry's Complete Commentary - Exodus 19:16-25
Now, at length, comes that memorable day, that terrible day of the Lord, that day of judgment, in which Israel heard the voice of the Lord God speaking to them out of the midst of the fire, and lived, Deut. 4:33. Never was there such a sermon preached, before nor since, as this which was here preached to the church in the wilderness. For, I. The preacher was God himself (Exod. 19:18): The Lord descended in fire, and (Exod. 19:20), The Lord came down upon mount Sinai. The shechinah, or glory of... read more