Moses is trying to kill Aaron and his remaining sons

Leviticus 10:7 says, “And ye shall not go out from the door of the tabernacle of the congregation, lest ye die: for the anointing oil of the LORD is upon you. And they did according to the word of Moses.”  Shouldn’t he have told them this rule before he told them to go out of the camp a few moments ago? Leviticus  10:4 “And Moses called Mishael and Elzaphan, the sons of Uzziel the uncle of Aaron, and said unto them, Come near, carry your brethren from before the sanctuary out of the camp.

10:5 So they went near, and carried them in their coats out of the camp; as Moses had said.”