Leviticus 16:19
Shaking drops of the blood from his finger on it seven times to make it holy and clean from whatever is unclean among the children of Israel.
Ezekiel 43:18-22
And he said to me, Son of man, the Lord God has said, These are the rules for the altar, when they make it, for the offering of burned offerings on it and the draining out of the blood.
Zechariah 13:1
In that day there will be a fountain open to the family of David and to the people of Jerusalem, for sin and for that which is unclean.
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