Our Saviour adduces this passage as a proof that the doctrine of the Resurrection was taught in the Old Testament Matthew 22:32, and He calls this book "the Book of Moses" Mark 12:26, two points to be borne in mind by readers of the Pentateuch.

I am the God of thy father - Though the word אבי abi, father, is here used in the singular, St Stephen, quoting this place, Acts 7:32, uses the plural, Ὁ Θεος των πατερων σου, The God of thy Fathers; and that this is the meaning the following words prove: The God of Abraham, the God of Isaac, and the God of Jacob. These were the fathers of Moses in a direct line. This reading is confirmed by the Samaritan and by the Coptic. Abraham was the father of the Ishmaelites, and with him was the covenant first made. Isaac was the father of the Edomites as well as the Israelites, and with him was the covenant renewed. Jacob was the father of the twelve patriarchs, who were founders of the Jewish nation, and to him were the promises particularly confirmed. Hence we see that the Arabs and Turks in general, who are descendants of Ishmael; the Edomites, now absorbed among the Jews, (see Clarke's note on Genesis 25:23), who are the descendants of Esau; and the Jewish people, wheresoever scattered, who are the descendants of Jacob, are all heirs of the promises included in this primitive covenant; and their gathering in with the fullness of the Gentiles may be confidently expected.

And Moses hid his face - For similar acts, see 1 Kings 19:13; Isaiah 6:1, Isaiah 6:5; Nehemiah 9:9; Psalm 106:44; Acts 7:34. He was afraid to look - he was overawed by God's presence, and dazzled with the splendor of the appearance.

Moreover he said, I am the God of thy fathers,.... Of every one of his fathers next mentioned:

the God of Abraham, the God of Isaac, and the God of Jacob; with whom the covenant respecting the land of Canaan, and the promise of the blessed seed the Messiah, was made: this again shows that the Angel of the Lord that now appeared was God himself, Jehovah the Son of God. Our Lord makes use of this text to prove the resurrection of the dead against the Sadducees, God being not the God of the dead, but of the living; Mark 12:26.

and Moses hid his face; wrapped it in his mantle or cloak, as Elijah did, 1 Kings 19:13, because of the glory of the divine Majesty now present, and conscious of his own sinfulness and unworthiness:

for he was afraid to look upon God; even upon this outward appearance and representation of him in a flame of fire; otherwise the essence of God is not to be looked upon and seen at all, God is invisible; but even this external token and symbol of him was terrible to behold; the thought that God was there filled him with fear, considering the greatness and awfulness of his majesty, and what a poor, weak, and sinful creature he was.

Jehovah then made Himself known to Moses as the God of his fathers, Abraham, Isaac, and Jacob, reminding him through that name of the promises made to the patriarchs, which He was about to fulfil to their seed, the children of Israel. In the expression, "thy father," the three patriarchs are classed together as one, just as in Exodus 18:4 ("my father"), "because each of them stood out singly in distinction from the nation, as having received the promise of seed directly from God" (Baumgarten). "And Moses hid his face, for he was afraid to look upon God." The sight of the holy God no sinful man can bear (cf. 1 Kings 19:12).

Moreover he said, I am the God of thy father, the God of Abraham, the God of Isaac, and the God of Jacob. And Moses hid his face; for he was {g} afraid to look upon God.

(g) For sin causes man to fear God's justice.

3:6 I am the God of thy father - He lets him know it is God that speaks to him, to engage his reverence, faith and obedience. Thy father, thy pious father Amram, and the God of Abraham, Isaac, and Jacob, thy ancestors. Engaged to them by solemn covenant, which I am now come to perform. And Moses hid his face, for he was afraid to look upon God - The more we see of God, the more cause we shall see to worship him with reverence and godly fear. And even the manifestations of God's grace should increase our humble reverence of him.

6-8. I am the God . come down to deliver-The reverential awe of Moses must have been relieved by the divine Speaker (see Mt 22:32), announcing Himself in His covenant character, and by the welcome intelligence communicated. Moreover, the time, as well as all the circumstances of this miraculous appearance, were such as to give him an illustrious display of God's faithfulness to His promises. The period of Israel's journey and affliction in Egypt had been predicted (Ge 15:13), and it was during the last year of the term which had still to run that the Lord appeared in the burning bush.

3:1-6 The years of the life of Moses are divided into three forties; the first forty he spent as a prince in Pharaoh's court, the second as a shepherd in Midian, the third as a king in Jeshurun. How changeable is the life of man! The first appearance of God to Moses, found him tending sheep. This seems a poor employment for a man of his parts and education, yet he rests satisfied with it; and thus learns meekness and contentment, for which he is more noted in sacred writ, than for all his learning. Satan loves to find us idle; God is pleased when he finds us employed. Being alone, is a good friend to our communion with God. To his great surprise, Moses saw a bush burning without fire to kindle it. The bush burned, and yet did not burn away; an emblem of the church in bondage in Egypt. And it fitly reminds us of the church in every age, under its severest persecutions kept by the presence of God from being destroyed. Fire is an emblem, in Scripture, of the Divine holiness and justice, also of the afflictions and trials with which God proves and purifies his people, and even of that baptism of the Holy Ghost, by which sinful affections are consumed, and the soul changed into the Divine nature and image. God gave Moses a gracious call, to which he returned a ready answer. Those that would have communion with God, must attend upon him in the ordinances wherein he is pleased to manifest himself and his glory, though it be in a bush. Putting off the shoe was a token of respect and submission. We ought to draw nigh to God with a solemn pause and preparation, carefully avoiding every thing that looks light and rude, and unbecoming his service. God does not say, I was the God of Abraham, Isaac, and Jacob, but I am. The patriarchs still live, so many years after their bodies have been in the grave. No length of time can separate the souls of the just from their Maker. By this, God instructed Moses as to another world, and strengthened his belief of a future state. Thus it is interpreted by our Lord Jesus, who, from hence, proves that the dead are raised, Lu 20:37. Moses hid his face, as if both ashamed and afraid to look upon God. The more we see of God, and his grace, and covenant love, the more cause we shall see to worship him with reverence and godly fear.