(b) That they may believe that the LORD God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath appeared unto thee.
(b) This power to work miracles was to confirm his doctrine, and to assure him of his vocation.
Related Commentaries of Exodus 4:5
Exodus 4:5
5 That they may believe that the LORD God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath appeared unto thee.