Leviticus 8:33
You shall not go out from the door of the Tent of Meeting seven days, until the days of your consecration are fulfilled: for he shall consecrate you seven days.
Exodus 29:35
"You shall do so to Aaron, and to his sons, according to all that I have commanded you. You shall consecrate them seven days.
Exodus 29:30
Seven days shall the son who is priest in his place put them on, when he comes into the Tent of Meeting to minister in the holy place.
Leviticus 14:8
"He who is to be cleansed shall wash his clothes, and shave off all his hair, and bathe himself in water; and he shall be clean. After that he shall come into the camp, but shall dwell outside his tent seven days.
Numbers 19:12
the same shall purify himself with water on the third day, and on the seventh day he shall be clean: but if he doesn't purify himself the third day, then the seventh day he shall not be clean.
Ezekiel 43:25-27
Seven days you shall prepare every day a goat for a sin offering: they shall also prepare a young bull, and a ram out of the flock, without blemish.