Bible Verses About Priests: Lasted seven days

This is what you are to do for Aaron and his sons based on all that I have commanded you, taking seven days to ordain them.

Sacrifice a bull as a sin offering each day for atonement. Purify the altar by making atonement for it, and anoint it to consecrate it.

For seven days you shall make atonement for the altar and consecrate it. Then the altar will become most holy; whatever touches the altar will be holy.

You must not go outside the entrance to the Tent of Meeting for seven days, until the days of your ordination are complete; for it will take seven days to ordain you.