The Lord Said: "You Are Responsible"

 Numbers 18:1 So the Lord said to Aaron, “You and your sons and your father's house with you shall bear iniquity connected with the sanctuary, and you and your sons with you shall bear iniquity connected with your priesthood. 2 And with you bring your brothers also, the tribe of Levi, the tribe of your father, that they may join you and minister to you while you and your sons with you are before the tent of the testimony. 

We have seen over and over again sections that begin: "The Lord spoke to Moses" or "God said to Moses" and occasionally "The Lord Spoke to Moses and Aaron."  But God was speaking to Aaron, and as the passage goes on, He was entrusting - and holding accountable - the Priests and Levites for a lot of what went on at the Tabernacle.  Once again, context is everything. In the preceding chapter, God had shown Aaron's tribe to be the tribe for the job, as only his rod of the twelve budded and bore fruit overnight. The other leaders were moved to fear.  Lest this choosing go to his head, God made it very clear that with this authority came great accountability. Often we find leaders in scripture letting their choosing "go to their heads" and abusing their power, and the people as a whole resting on their laurels as "God's chosen people." We are not immune to this.  We are held responsible to God for all His blessings to us.