Exodus 29:35

35 Thus you shall do to Aaron and to his sons, just as I have commanded you; through seven days you shall ordain them.

Exodus 29:35 In-Context

33 They themselves shall eat the food by which atonement is made, to ordain and consecrate them, but no one else shall eat of them, because they are holy.
34 If any of the flesh for the ordination, or of the bread, remains until the morning, then you shall burn the remainder with fire; it shall not be eaten, because it is holy.
35 Thus you shall do to Aaron and to his sons, just as I have commanded you; through seven days you shall ordain them.
36 Also every day you shall offer a bull as a sin offering for atonement. Also you shall offer a sin offering for the altar, when you make atonement for it, and shall anoint it, to consecrate it.
37 Seven days you shall make atonement for the altar, and consecrate it, and the altar shall be most holy; whatever touches the altar shall become holy.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.