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.

Wesley's Notes

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.

Jamieson-Fausset-Brown Bible Commentary

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.

Matthew Henry's Concise Commentary

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.