The God of thy fathers, engaged to them by covenant or promise, which I am now come to perform. He was afraid to look upon God, as other excellent servants of God have been, through the sense of their own meanness and sinfulness, and of God's majesty and holiness. See Genesis 16:13, Genesis 17:3 1 Kings 19:13 Isaiah 6:2,5, &c.
Related Commentaries of Exodus 3:6
Exodus 3:6
6 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 afraid to look upon God.