Seven: Miscellany of Sevens: The Sprinkling of Blood Seven Times
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Leviticus 4:6
The priest is to dip his finger in the blood and sprinkle some of it seven times before the LORD, in front of the veil of the sanctuary.
Leviticus 14:7
Seven times he shall sprinkle the one to be cleansed of the skin disease. Then he shall pronounce him clean and release the live bird into the open field.