Encyclopedia Judaica 15:1244,
In the Bible there is no text unanimously understood to affirm explicitly the eternity or non-abrogability of the Torah; However, many laws of the Torah are accompanied by phrases such as, ‘an everlasting injunction through your generations’ (Lev. 3:17, et al.)_.the Rabbis taught that the Torah would continue to exist in the world to come (e.g. Eccles. R. 2:1), although some of them were of the opinion that innovations would be made in the messianic era (e.g. Gen. R. 98:9; Lev. R. 9:7)_.
[Saadiah Gaon] interpreted the verse, ‘remember ye the Torah of Moses_behold, I will send you Elijah_’ (Mal. 3:22-23), as teaching that the Torah will hold valid until the prophet Elijah returns to herald the resurrection (Beliefs and Opinions 3:7).
“Arrogability” refers to abolishing by formal means; a formal annulment.
From the Talmud:There is a statement made in the Talmud-Makkot 23b-24a that we paraphrase here:
613 commandments were transmitted to Moses on Mount Siani (365 negative or prohibitions and 248 positive or injunctions) After Moses, David came and reduced the 613 commandments to 11, (Psalm 15:1-5). Then Isaiah came and reduced the commandments to 6, (Isaiah 33:15). The Micah came and reduced them to 3, (Micah 6:8). Then Isaiah came again and reduced them to 2, (Isaiah 56:1). Amos came and reduced them to 1, (Amos 5:4). Habakkuk came and also reduced them to 1, (Habakkuk 2:4). This one commandment is, “The righteous shall live according to his faith.”
Interestingly enough, Rabbis Saul of Tarsus aka the Apostle Paul, being well trained in the ancient Jewish traditions, agrees with this ancient teaching when he states,
I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile. For in the gospel a righteousness from God is revealed, a righteousness that is by faith from first to last, just as it is written: “The righteous will live by faith” (Romans 1:16-17).
Talmud-Hagigah 5b on Jeremiah 13:17 refers to “the pride of Israel, which is why the Torah will be taken away from them and given to the Gentile nations.”
Talmud-Sanhedrin 90a,
R. Abbahu said in R. Johanan’s name: In every matter, if a prophet tells you to transgress the commandments of the Torah, obey him,(1) with the exception of idolatry: should he even cause the sun to stand still in the middle of the heavens for you [as proof of divine inspiration], do not hearken to him.
Footnote: (1) E.g., as in the case of Elijah, who ordered sacrifices to be offered on Mount Carmel.
Talmud-Megillah 70d,
Rabbi Yochanan said, ‘The Prophets and the Writings will be annulled in the future.’ Why? For it is written ‘With a great voice, and it shall not cease.’ (Deuteronomy 5:19) R. Simeon ben Lekish said, ‘Even the Scroll of Esther and the oral laws will not be annulled in the future for it is said, ‘With a great voice, and it shall not cease.” Elsewhere it is said, ‘Nor the memorial of them perish from their seed.’ (Esther 9:8)
Talmud-Sanhedrin 98b,
What is his [the Messiah’s] name? The School of R. Shila said: His name is Shiloh, for it is written, until Shiloh come.(1)_The Rabbis said: His name is ‘the leper scholar,’ as it is written, Surely he hath born our griefs, and carried our sorrows: yet we did esteem him a leper, smitten of God, and afflicted. [Isa LIII,4].
Footnote: (1) “That he might receive the Torah.”