Thematic Bible: The whole system of mosaic rites

[That Tabernacle] is symbolic of the present time, [indicating] that both gifts and [animal] sacrifices, which are offered [by the priests], are not able to give the worshiper a clear conscience since, with foods and drinks and various [ceremonial] washings, they are only outward regulations imposed until the time when everything would be made right [i.e., under the New Agreement].

Therefore, even the first Agreement was not ratified without blood [i.e., without a death taking place]. For after Moses had declared every commandment of the law to all the people, he took the blood of calves and goats and [mixed it] with water, then sprinkled both the scroll [of the Agreement] and all the people with a hyssop branch covered by red wool [dipped in the mixture]. He said [Ex. 29:8], "This is the blood of the Agreement, which God commanded you [to observe]." read more.
In the same way he also sprinkled blood on the Tabernacle and all of the utensils used in its ministry. And, according to the law of Moses, almost everything is [ceremonially] cleansed by blood, for there is no forgiveness [of sins] apart from the shedding of blood. Therefore, it was necessary for the copies of the heavenly things [i.e., the Tabernacle, its furniture and utensils, etc.] to be [ceremonially] cleansed by these things [i.e., the blood of animal sacrifices], but the heavenly things themselves [i.e., the church, both on earth and in heaven] require better sacrifices than these [i.e., the sacrifice of Christ].