Ezekiel 43:25
"For seven days you will provide every day a goat for a sin offering; a young bull and a ram from the flock, both without blemish, will be provided.
Leviticus 8:33
And you must not go out from the entrance of the Meeting Tent for seven days, until the day when your days of ordination are completed, because you must be ordained over a seven-day period.
Exodus 29:35-37
"Thus you are to do for Aaron and for his sons, according to all that I have commanded you; you are to consecrate them for seven days.
Leviticus 8:35
You must reside at the entrance of the Meeting Tent day and night for seven days and keep the charge of the Lord so that you will not die, for this is what I have been commanded."