Out of the camp - The encampment must have extended far and wide over the plain in front of the mountain. From one entrance of the plain to the other there is space for the whole host of the Israelites.

And Moses brought forth the people - to meet with God - For though they might not touch the mount till they had permission, yet when the trumpet sounded long, it appears they might come up to the nether part of the mount, (see Exodus 19:13, and Deuteronomy 4:11); and when the trumpet had ceased to sound, they might then go up unto the mountain, as to any other place.

It was absolutely necessary that God should give the people at large some particular evidence of his being and power, that they might be saved from idolatry, to which they were most deplorably prone; and that they might the more readily credit Moses, who was to be the constant mediator between God and them. God, therefore, in his indescribable majesty, descended on the mount; and, by the thick dark cloud, the violent thunders, the vivid lightnings, the long and loud blasts of the trumpet, the smoke encompassing the whole mountain, and the excessive earthquake, proclaimed his power, his glory, and his holiness; so that the people, however unfaithful and disobedient afterwards, never once doubted the Divine interference, or suspected Moses of any cheat or imposture. Indeed, so absolute and unequivocal were the proofs of supernatural agency, that it was impossible these appearances could be attributed to any cause but the unlimited power of the author of Nature.

It is worthy of remark that the people were informed three days before, Exodus 19:9-11, that such an appearance was to take place; and this answered two excellent purposes:

1. They had time to sanctify and prepare themselves for this solemn transaction; and,

2. Those who might be skeptical had sufficient opportunity to make use of every precaution to prevent and detect an imposture; so this previous warning strongly serves the cause of Divine revelation.

Their being at first prohibited from touching the mount on the most awful penalties, and secondly, being permitted to see manifestations of the Divine majesty, and hear the words of God, subserved the same great purposes. Their being prohibited in the first instance would naturally whet their curiosity, make them cautious of being deceived, and ultimately impress them with a due sense of God's justice and their own sinfulness; and their being permitted afterwards to go up to the mount, must have deepened the conviction that all was fair and real, that there could be no imposture in the case, and that though the justice and purity of God forbade them to draw nigh for a time, yet his mercy, which had prescribed the means of purification, had permitted an access to his presence. The directions given from Exodus 19:10-15 inclusive show, not only the holiness of God, but the purity he requires in his worshippers.

Besides, the whole scope and design of the chapter prove that no soul can possibly approach this holy and terrible Being but through a mediator; and this is the use made of this whole transaction by the author of the Epistle to the Hebrews, Hebrews 12:18-24.

And Moses brought forth the people out of the camp,.... Which was before the mountain and near it, when the above tokens were given of the divine Presence on it; as they were thrown into a panic upon the sound of the trumpet, it was, perhaps, with some difficulty that they were brought out of the camp, or persuaded to quit it; and nothing short of the presence of Moses at the head of them, to go before them, and lead them to the foot of the mountain, could have prevailed upon them to have done it:

to meet with God; who came forth in such an awful and solemn manner, as their King and lawgiver, to deliver a body of laws to them, to be the rule of their future conduct:

and they stood at the nether part of the mount; at the bottom of it, where bounds were set, and a fence made, that they should proceed no further, and yet near enough to hear what God said to Moses and to them.

And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount.

17. Moses brought forth the people out of the camp to meet with God-Wady-er-Raheh, where they stood, has a spacious sandy plain; immediately in front of Es Suksafeh, considered by Robinson to be the mount from which the law was given. "We measured it, and estimate the whole plain at two geographical miles long, and ranging in breadth from one-third to two-thirds of a mile, or as equivalent to a surface of one square mile. This space is nearly doubled by the recess on the west, and by the broad and level area of Wady-es-Sheikh on the east, which issues at right angles to the plain, and is equally in view of the front and summit of the mount. The examination convinced us that here was space enough to satisfy all the requisitions of the Scripture narrative, so far as it relates to the assembling of the congregation to receive the law. Here, too, one can see the fitness of the injunction to set bounds around the mount, that neither man nor beast might approach too near, for it rises like a perpendicular wall." But Jebel Musa, the old traditional Sinai, and the highest peak, has also a spacious valley, Wady Sebaiyeh, capable of holding the people. It is not certain on which of these two they stood.

19:16-25 Never was there such a sermon preached, before or since, as this which was preached to the church in the wilderness. It might be supposed that the terrors would have checked presumption and curiosity in the people; but the hard heart of an unawakened sinner can trifle with the most terrible threatenings and judgments. In drawing near to God, we must never forget his holiness and greatness, nor our own meanness and pollution. We cannot stand in judgment before him according to his righteous law. The convinced transgressor asks, What must I do to be saved? and he hears the voice, Believe in the Lord Jesus Christ, and thou shalt be saved. The Holy Ghost, who made the law to convince of sin, now takes of the things of Christ, and shows them to us. In the gospel we read, Christ hath redeemed us from the curse of the law, being made a curse for us. We have redemption through his blood, even the forgiveness of sins. Through him we are justified from all things, from which we could not be justified by the law of Moses. But the Divine law is binding as a rule of life. The Son of God came down from heaven, and suffered poverty, shame, agony, and death, not only to redeem us from its curse, but to bind us more closely to keep its commands.