By Dr. Arnold G. Fruchtenbaum, Dr. Randall Price, and Others
"Several passages in the Hebrew Scriptures indicate that animal sacrifices will be re-instituted during the millennial kingdom, the most important one being Ezekiel 44:1-46:24. Many evangelical and Protestant believers struggle with the return of animal sacrifices in a future temple as they assume that this would “be equivalent to a denial of the finality and sufficiency of Christ’s sacrifice.”
Dispensationalists have therefore felt compelled to answer the question of the purpose of a millennial sacrificial system, and the various options will be summarized here. Before digging into the study, it should be pointed out that just because we may not know the reason for something in the Scriptures, it does not mean we should not take the passage literally."
Full Article here: https://www.ariel.org/pdfs/magazine/fall-2016.pdf