The Torah states explicitly that the mitzvoth (commandments) are eternal, to be performed by all generations of Jews after the revelation at Mount Sinai. This was clearly stated in several places:
This was expressed powerfully by Maimonides (Rambam) who, in the ninth of his Thirteen Principles of Faith, states that since the Torah was divinely given, it is timeless and not subject to revision by human hands:
It is clear and explicit in the Torah that it is [God’s] commandment, remaining forever without change, addition, or diminishment, as [Deuteronomy 13:1] states:
and [Deuteronomy 29:28] states:
This teaches that we are commanded to fulfill all the Torah’s directives forever.
It is also said: “It is an everlasting statute for all your generations,” and [Deuteronomy 30:12] states:
This teaches that a prophet can no longer add a new precept [to the Torah].
When it comes to the Temple sacrifices, however, there is a debate about whether or not they will be reinstated in the third Temple. The Midrash (Lev. Rabbah 9:7) states, āAll sacrifices will be abolished except for the offering of thanksgiving.ā The Yalkut Shimoni and Midrash Mishlei (Prov. 9:2) wrote, āAll festivals will be abolished except for Purim which will never be abolished; and the Day of Atonement will be like Purim.ā
Ezekiel, in his end-of-days vision (chapters 43-46), describes the Third Temple in detail including animal sacrifices such as a bull sin offering (Ezekiel 43:21) and a goat sin offering (Ezekiel 43:22). The prophet states explicitly that these sacrifices will continue to be brought throughout the post-Messiah era:
This was further emphasized by the Prophet Isaiah:

It is important, however, to consider the opinion of Rabbi Avraham Yitzchak Kook, who served as the first Chief Rabbi of Palestine under the British Mandate. Rabbi Kook cited Malachi:
The term in this verse for āofferingsā is mincha, i.e. the grain offering. Rabbi Kook explained that the prophet specified grain offerings and not animal offerings, because after the resurrection of the dead, which will include animals, even the animals will have a direct and personal knowledge of God. Once that occurs, only grain offerings will be brought to the Temple.