What is "asher Atah Mar'eh ba'Har" referring to?
Rashi and Rashbam: It is referring to the shape of the Menorah with all its details, which Moshe had difficulty in understanding. 1
Menachos, 29a: It is referring to the Aron of fire, the Shulchan of fire and the Menorah of fire which came down from Heaven and which Moshe ultimately copied. 2
Oznayim la'Torah: Since the Torah writes (not 'ke'Savnisam' or 'es Tavnisam', but) "be'Savnisam", Hashem was instructing Moshe to study the various forms that He was showing him again and again, until he mastered them. 3
Refer to 25:31:2:1*.
See Torah Temimah, note 47.
This explains the Midrash Rabah, which relates how, after Moshe descended Har Sinai, he forgot what Hashem had shown him, so he turned back and asked Hashem to show him again - and how this happened a number of times.
