One of the first things to notice in this new section of Leviticus, a section where God will declare to Moses and Aaron what is clean and unclean, what is appropriate and inappropriate for God's people, what makes them ceremonially clean and what makes them ceremonially unclean. One of the first things is that, Aaron, is addressed by God right alongside Moses. This is rare throughout the book of Leviticus. Normally, God addresses and Moses then hands down the dictates to Aaron, and of course, to the rest of the nation.