1 Corinthians 14:40

let all things be done with decency, and without disorder.

Hebrews 7:11

If therefore the Levitical priesthood, concerning which the people received a law, could have given perfection, what further need was there that another priest should rise, to be named after the order of Melchisedec, and not after the order of Aaron?

Treasury of Scripture Knowledge

Summary

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.

The orderings

Under aaron

Bible References

The orderings

1 Corinthians 14:40
let all things be done with decency, and without disorder.

Under aaron

Hebrews 7:11
If therefore the Levitical priesthood, concerning which the people received a law, could have given perfection, what further need was there that another priest should rise, to be named after the order of Melchisedec, and not after the order of Aaron?