דבר אל אהרן ואמרת אליו בעהלתך את הנרות (בהעלתך ח:ב)

Rashi discusses why this passage regarding the Menorah is placed immediately after the long recitation of the offerings of the Nesiyim – the tribal leaders. Rashi comments that Aaron was chagrined that every Shevat, represented by its Nassi- leader, could donate to the Mishkan, and he and the Kohanim were excluded.  Consequently, Hashem comforted him by saying that his service was more significant than theirs because he would prepare and kindle the Menorah.