Really?
What about your proof text?
Ezekiel 45:15-17 says: “And one lamb out of the flock, out of two hundred, out of the fat pastures of Israel; for a meat offering, and for a burnt offering, and for peace offerings, to make reconciliation [Heb. Kaphar] for them, saith the Lord GOD. All the people of the land shall give this oblation for the prince in Israel. And it shall be the prince's part to give burnt offerings, and meat offerings, and drink offerings, in the feasts, and in the new moons, and in the sabbaths, in all solemnities of the house of Israel: he shall prepare the sin offering, and the meat offering, and the burnt offering, and the peace offerings, to make reconciliation [Heb. Kaphar] for the house of Israel.”
There is nothing in this text that would give us any grounds to place this old covenant custom in a future millennial earth. What possible benefit could the widespread slaughter of innocent animals secure to reconcile mankind unto God? There is no evidence here that God would restore this bloodbath after the second coming under the guise of “the trespass offering,” “the meat offering,” “burnt offerings,” “peace offerings,” “meat offerings,” “drink offerings” and “sin offering” to reconcile anyone or anything before God.
On the Day of Atonement once a year the High Priest would make scarifies for his own sin, the sin of his family and Israel’s sin. Atonement is a very common word in the Old Testament but the word “propitiation” is preferred in the New Testament. The Hebrew word means Kaphar carries the basic idea of covering over. The Greek word used in the Greek Old Testament to interpret this word means appeasement or satisfaction, specifically toward God. It carries the sense of pacify, placate, expiate or cancel. It is typically interpreted “atonement” or “reconciliation” by the translators throughout the Old Testament. But, cover, pacify, placate, expiate or cancel what? The sin of the people that the sacrifice was made for.