American Standard Version (ASV):
This was the ordering of them in their service, to come into the house of Jehovah according to the ordinance [given] unto them by Aaron their father, as Jehovah, the God of Israel, had commanded him.
King James Version (KJV):
These [were] the orderings of them in their service to come into the house of the LORD, according to their manner, under Aaron their father, as the LORD God of Israel had commanded him.