Leviticus 16:19

With his finger he shall sprinkle some of the blood on it seven times and cleanse it, and from the impurities of the sons of Israel consecrate it.

Ezekiel 43:18-22

And He said to me, “Son of man, thus says the Lord God, ‘These are the statutes for the altar on the day it is built, to offer burnt offerings on it and to sprinkle blood on it.

Zechariah 13:1

“In that day a fountain will be opened for the house of David and for the inhabitants of Jerusalem, for sin and for impurity.

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