Blood Sacrifices in the Millennium

definitely it is only Jesus who takes away sin, and He gave Himself once for sin, forever, as Hebrews says.
that millennium will be a strange time, with immortals and mortals, those who survived the tribulation and those born into the millennium. since the sacrifices are not able to remove sin, that leaves instructional, memorial reasons; if Jesus has another reason, He will teach us.

10 “‘The Levites who went far from me when Israel went astray and who wandered from me after their idols must bear the consequences of their sin. 11 They may serve in my sanctuary, having charge of the gates of the temple and serving in it; they may slaughter the burnt offerings and sacrifices for the people and stand before the people and serve them. 12 But because they served them in the presence of their idols and made the people of Israel fall into sin, therefore I have sworn with uplifted hand that they must bear the consequences of their sin, declares the Sovereign Lord. 13 They are not to come near to serve me as priests or come near any of my holy things or my most holy offerings; they must bear the shame of their detestable practices. 14 And I will appoint them to guard the temple for all the work that is to be done in it.
15 “‘But the Levitical priests, who are descendants of Zadok and who guarded my sanctuary when the Israelites went astray from me, are to come near to minister before me; they are to stand before me to offer sacrifices of fat and blood, declares the Sovereign Lord. 16 They alone are to enter my sanctuary; they alone are to come near my table to minister before me and serve me as guards.

Ezekiel 44:10-15

Would you please provide passages/verses to support your saying that there will be animal sacrifices during the millennial reign?

Thank so much.

hi,
in Ezekiel where it talks about the millennial temple this comes up, for example
Ez 40:38-43 and see David's post above ez 44:10-15
ez 46:10-24

Here is another example, see verse 21 especially. The other verses are for context, showing this is after Armageddon:

12 This is the plague with which the Lord will strike all the nations that fought against Jerusalem: Their flesh will rot while they are still standing on their feet, their eyes will rot in their sockets, and their tongues will rot in their mouths. 13 On that day people will be stricken by the Lord with great panic. They will seize each other by the hand and attack one another. 14 Judah too will fight at Jerusalem. The wealth of all the surrounding nations will be collected—great quantities of gold and silver and clothing. 15 A similar plague will strike the horses and mules, the camels and donkeys, and all the animals in those camps.

16 Then the survivors from all the nations that have attacked Jerusalem will go up year after year to worship the King, the Lord Almighty, and to celebrate the Festival of Tabernacles. 17 If any of the peoples of the earth do not go up to Jerusalem to worship the King, the Lord Almighty, they will have no rain. 18 If the Egyptian people do not go up and take part, they will have no rain. The Lord will bring on them the plague he inflicts on the nations that do not go up to celebrate the Festival of Tabernacles. 19 This will be the punishment of Egypt and the punishment of all the nations that do not go up to celebrate the Festival of Tabernacles.