Bible Verses About Priests: Lasted seven days

And thus shalt thou do unto Aaron, and to his sons, according to all that I have commanded thee: seven days shalt thou consecrate them.

And every day shalt thou offer the bullock of sin-offering for atonement: and thou shalt cleanse the altar, when thou makest atonement for it; and thou shalt anoint it, to sanctify it.

Seven days thou shalt make atonement for the altar, and sanctify it: and the altar shall be most holy; whatsoever toucheth the altar shall be holy.

And ye shall not go out from the door of the tent of meeting seven days, until the days of your consecration be fulfilled: for he shall consecrate you seven days.