1 And the LORD spoke unto Moses, saying:
here is God addressing the INDIVIDUAL:
2 Speak unto the children of Israel, saying: If any one shall sin through error, in any of the things which the LORD hath commanded not to be done, and shall do any one of them:
here is God Commanding what do if the individual sins:
4 And he shall bring the bullock unto the door of the tent of meeting before the LORD; and he shall lay his hand upon the head of the bullock, and kill the bullock before the LORD