Compare Genesis 17:7.

And they shall know that I am the Lord their God - That is, They shall acknowledge God, and their infinite obligations to him. In a multitude of places in Scripture the word know should be thus understood.

That I may dwell among them - For without this acknowledgment and consequent dependence on and gratitude and obedience to God, they could not expect him to dwell among them.

By dwelling among the people God shows that he would be a continual resident in their houses and in their hearts; that he would be their God - the sole object of their religious worship, to whom they should turn and on whom they should trust in all difficulties and distresses; and that he would be to them all that the Creator could be to his creatures. That in consequence they should have a full conviction of his presence and blessing, and a consciousness that He was their God, and that they were his people. Thus then God dwells among men that they may know him; and they must know him that he may continue to dwell among them. He who does not experimentally know God, cannot have him as an indwelling Savior; and he who does not continue to know - to acknowledge, love, and obey him, cannot retain him as his Preserver and Sanctifier. From the beginning of the world, the salvation of the souls of men necessarily implied the indwelling influences of God. Reader, hast thou this salvation? This alone will support thee in all thy travels in this wilderness, comfort thee in death, and give thee boldness in the day of judgment. "He," says an old writer, "who has pardon may look his judge in the face."

And they shall know that I am the Lord their God,.... By his presence with them, by the blessings bestowed upon them, by his care of them, and kindness to them:

that brought them forth out of the land of Egypt, that I may dwell amongst them; not only did he bring them from thence, that they might dwell in the land of Canaan, but that he might dwell among them, which was by far the greatest mercy; and not only that they might be delivered from the bondage and affliction with which they were sorely pressed, but that they might be a free people, under the protection of their King and their God, in the midst of them; all which was a great encouragement to them, and an obligation on them to attend the service of the sanctuary, and to obey the Lord in whatsoever he had enjoined or should command them:

I am the Lord their God; of which he had given full proof and evidence by what he had done for them, and would yet give more; and to have the Lord our God is the greatest happiness that can be enjoyed, see Psalm 33:12.

And they shall know that I am the LORD their God, that brought them forth out of the land of Egypt, that I may dwell among them: {q} I am the LORD their God.

(q) It is I the Lord, that am their God.

29:38-46 A lamb was to be offered upon the altar every morning, and a lamb every evening. This typified the continual intercession which Christ ever lives to make for his church. Though he offered himself but once for all, that one offering thus becomes a continual offering. This also teaches us to offer to God the spiritual sacrifices of prayer and praise every day, morning and evening. Our daily devotions are the most needful of our daily works, and the most pleasant of our daily comforts. Prayer-time must be kept up as duly as meal-time. Those starve their own souls, who keep not up constant attendance on the throne of grace; constancy in religion brings in the comfort of it.