출애굽기 4:5의 주석

THAT THEY MAY BELIEVE THAT THE ETERNAL … HATH APPEARED TO THEE. The interpretation of this verse is that “they may believe when you do the sign before them.” Scripture, however, speaks briefly about this for it is self-understood that G-d showed Moses wonders with the intent that he perform them before the people in order that they believe him.

למען יאמינו כי נראה אליך השם. "So that they will believe that G'd has appeared to you." The reason that G'd kept repeating "the G'd of their fathers," may have been to hint to the people present that unless one believed in the G'd who had been the G'd of the patriarchs one could not hope to achieve control over the serpent, i.e. the forces of evil in this universe. A demonstration of such control would therefore imply that one was on intimate terms with G'd.

למען יאמינו כי נראה אליך ה', “in order that they will believe that the Lord, (attribute of Mercy) G’d of your fathers has indeed appeared to you.” The Torah refers to the demonstration of this miracle, the verse being an abbreviation, seeing that it was quite understood that this was to be the purpose of the miracle.