What are the ramifications of "Zeh ha'Davar ... "? What is it referring to?
Rashi (in Pasuk 23) and Ramban: When, after the seven days that Moshe served in the Mishkan, the Shechinah did not appear, the people were ashamed, and asked him whether all their efforts to atone for the sin of the Golden Calf had been in vain, he replied that what Hashem commanded that, for the Shechinah to appear, Aharon his brother, who was more worthy than himself, should perform the Avodah.
Seforno: Moshe was instructing them 1 to place their hands of the Chatas and the Olah of the Tzibur.
Targum Yonasan: 'This is what you shall do: Remove the Yeitzer ha'Ra from your hearts and the Shechinah will appear to you!' 2