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. 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; Psalms 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.