Short answer ------------ The author is contrasting the need that the priests have for daily preparation for [liturgy][1] by a daily ritual of purification...: >Exo 29:38-44 NLT - 38 "These are the sacrifices you are to offer regularly on the altar. **Each day**, offer two lambs that are a year old, 39 one in the morning and the other in the evening. 40 With one of them, offer two quarts of choice flour mixed with one quart of pure oil of pressed olives; also, offer one quart of wine as a liquid offering. 41 Offer the other lamb in the evening, along with the same offerings of flour and wine as in the morning. It will be a pleasing aroma, a special gift presented to the LORD. 42 **"These burnt offerings are to be made each day from generation to generation.** Offer them in the LORD's presence at the Tabernacle entrance; there I will meet with you and speak with you. 43 I will meet the people of Israel there, in the place made holy by my glorious presence. 44 Yes, **I will consecrate the Tabernacle and the altar, and I will consecrate Aaron and his sons to serve me as priests.** ...with Jesus having secured permanent forgiveness of sins by his blood, which ratified the new covenant: >RSV Hebrews 1:3 >He reflects the glory of God and bears the very stamp of his nature, upholding the universe by his word of power. When he had made purification for sins, he sat down at the right hand of the Majesty on high, The fact that he "sat down" indicates that the purification had been accomplished and further sacrifices were not needed, because the new covenant had been ratified with the Hebrews and it provided forgiveness of transgressions. >Heb 9:7-28 NLT - 7 But only **the high priest** ever entered the Most Holy Place, and **only once a year**. And he **always offered blood for his own sins and for the sins the people** had committed in ignorance. 8 By these regulations the Holy Spirit revealed that **the entrance to the Most Holy Place was not freely open as long as the Tabernacle and the system it represented were still in use. 9 This is an illustration pointing to the present time. For the gifts and sacrifices that the priests offer are not able to cleanse the consciences of the people who bring them**. 10 For that old system deals only with food and drink and various cleansing ceremonies--**physical regulations that were in effect only until a better system could be established**. 11 So **Christ has now become the High Priest over all the good things that have come**. He has entered that greater, more perfect Tabernacle in heaven, which was not made by human hands and is not part of this created world. 12 **With his own blood**--not the blood of goats and calves--he entered the Most Holy Place once for all time **and secured our redemption forever**. 13 Under the old system, the blood of goats and bulls and the ashes of a young cow **could cleanse people's bodies from ceremonial impurity**. 14 Just think how much more **the blood of Christ will purify our consciences from sinful deeds so that we can worship the living God**. For by the power of the eternal Spirit, Christ offered himself to God as a perfect sacrifice for our sins. 15 **That is why he is the one who mediates a new covenant between God and people**, so that all who are called can receive the eternal inheritance God has promised them. For **Christ died to set them free from the penalty of the sins they had committed under that first covenant**. 16 Now when someone leaves a will, it is necessary to prove that the person who made it is dead. 17 The will goes into effect only after the person's death. While the person who made it is still alive, the will cannot be put into effect. 18 That is why even the first covenant was put into effect with the blood of an animal. 19 For after Moses had read each of God's commandments to all the people, he took the blood of calves and goats, along with water, and sprinkled both the book of God's law and all the people, using hyssop branches and scarlet wool. 20 Then he said, "This blood confirms the covenant God has made with you." 21 And in the same way, he sprinkled blood on the Tabernacle and on everything used for worship. 22 In fact, according to the law of Moses, nearly everything was purified with blood. For without the shedding of blood, there is no forgiveness. 23 That is why the Tabernacle and everything in it, which were copies of things in heaven, had to be purified by the blood of animals. But the real things in heaven had to be purified with far better sacrifices than the blood of animals. 24 For Christ did not enter into a holy place made with human hands, which was only a copy of the true one in heaven. He entered into heaven itself to appear now before God on our behalf. 25 And **he did not enter heaven to offer himself again and again, like the high priest here on earth** who enters the Most Holy Place **year after year with the blood of an animal**. 26 If that had been necessary, Christ would have had to die again and again, ever since the world began. But now, once for all time, he has appeared at the end of the age to remove sin by his own death as a sacrifice. 27 And just as each person is destined to die once and after that comes judgment, 28 so also **Christ died once for all time as a sacrifice to take away the sins of many people**. He will come again, not to deal with our sins, but to bring salvation to all who are eagerly waiting for him. So the priests were prepared daily to serve God by bloody sacrifices that were ineffectual but Christ's one death, ratifying a new covenant, effected permanent forgiveness of the sins committed under the old, passing away covenant, for the houses of Israel and Judah (Jer 31). [1]: https://www.merriam-webster.com/dictionary/liturgy