Sforno on Exodus 34:17/ספורנו על שמות ל״ד:י״ז

1אלוהי מסכה, graven images; some cameos, worn at times when certain horoscopes, constellations, dominate the sky; they are intended to protect the wearer. (compare Maimonides, Moreh, 1,63) The reason why these cameos are cast is that all of their parts must be made simultaneously, symbolising the simultaneous appearance of such constellations of certain stars. The people serving these constellations believe that they can improve the quality of their lives by means of goodwill extended to them by these stars. The Torah warns against this practice because the person doing this may not even consider that this constitutes a rebellion against the Creator seeing he does not accept these stars as “gods.” G’d looks at the matter differently, not wanting any of us to turn to any source other than Him for all our wishes and prayers. This is why we recite in our daily prayers ואנחנו לא נדע מה נעשה כי עליך עינינו, “for we do not know what we could do, seeing that our eyes are turned exclusively to You.” (Chronicles II 20,12)