Ezekiel 43:22

43:22 “On the second day, you will offer a male goat without blemish for a sin offering. They will purify the altar just as they purified it with the bull.

Ezekiel 43:26

43:26 For seven days they will make atonement for the altar and cleanse it, so they will consecrate it.

Leviticus 16:19

16:19 Then he is to sprinkle on it some of the blood with his finger seven times, and cleanse and consecrate it from the impurities of the Israelites.

Hebrews 9:21-23

9:21 And both the tabernacle and all the utensils of worship he likewise sprinkled with blood. 9:22 Indeed according to the law almost everything was purified with blood, and without the shedding of blood there is no forgiveness. 9:23 So it was necessary for the sketches of the things in heaven to be purified with these sacrifices, but the heavenly things themselves required better sacrifices than these.