The medrash tanchuma on parshas Shmini #7 takes the opinion that at that great feast of Beheimos and Leviason, the mitzvos which until now were only to purify/smelt the people with will no longer apply. The proof is that the Beheimos will not have a proper slaughtering, but will rather be killed by the Liviason. The medrash goes on to prove that Liviason is ...
Masechet Menachos 29b states that Moshe Rabeinu was allowed to sit in the bais medrash of Rabbi Akivah, but could not follow the learning there.
They told that when Moses went above to receive the Torah, he found
the Holy One, blessed be He, sitting and attaching crowns to the
letters. (Of course, G‑d doesn’t sit, neither does He need to use cut
The source for this is Torath Kohanim 26:5
[ה] מנין שהעץ עתיד להיות נאכל? תלמוד לומר "עץ פרי"; אם ללמד שהוא עושה
פרי, והלא כבר נאמר "עושה פרי"!? אם כן למה נאמר "עץ פרי"? אלא מה פרי
נאכל, אף העץ נאכל.
BTW, I think that your statement "as in Gan eden" is incorrect.
Rashi on Bereshit 1:11 clearly states that the trees didn't do like Hashem commanded
A few of the sources are:
Zohar based on Chagai 2:9 גָּדוֹל יִהְיֶה כְּבוֹד הַבַּיִת הַזֶּה הָאַחֲרוֹן, מִן-הָרִאשׁוֹן says that the third Bais haMikdash will be built by Hashem.
Yalkut Shimoni Tehilim 848 on Tehilim 93:5 עֵדֹתֶיךָ, נֶאֶמְנוּ מְאֹד--לְבֵיתְךָ נַאֲוָה-קֹדֶשׁ: ה', לְאֹרֶךְ יָמִים explains that when the house of Hashem will be built by ...
There is a verse in Yoel, which may be familiar from the Hagadda (or from learning Navi), which describes the apocalypse. Yoel 3:3-4 (verse 4 included for context):
ג וְנָתַתִּי, מוֹפְתִים, בַּשָּׁמַיִם, וּבָאָרֶץ: דָּם וָאֵשׁ, וְתִימְרוֹת עָשָׁן. ד הַשֶּׁמֶשׁ יֵהָפֵךְ לְחֹשֶׁךְ, וְהַיָּרֵחַ לְדָם--לִפְנֵי, בּוֹא יוֹם יְהוָה, הַגָּדוֹל, וְהַנּוֹרָא.
Rabban Yochanan ben Zakkay predicted (apparently wrongly, as indicated by the context) that a future generation would change a law, declaring a loaf of third degree impurity to be pure (Sota 5:2).
אָמַר רַבִּי יְהוֹשֻׁעַ, מִי יְגַלֶּה עָפָר מֵעֵינֶיךָ, רַבָּן יוֹחָנָן בֶּן זַכַּאי, שֶׁהָיִיתָ אוֹמֵר, עָתִיד דּוֹר אַחֵר לְטַהֵר כִּכָּר שְׁלִישִׁי, שֶׁאֵין ...
In יְחֶזְקֵאל chapter 47 you can read about how the land of Israel will be redivided into 13 portions, once Moshiach comes.
Each tribe will get a portion. Converts will also be allocated a portion, based on which tribe coverted them.
The extra 13th portion is for the Cohen Gadol, Cohanim, Leviim and Bet Hamikdash.
יג: כֹּה אָמַר א' ה' גֵּה גְבוּל אֲשֶׁר ...
Note: This answer was posted to an earlier verion of the question.
Your question seems to be based on the premises that religion is supposed to be difficult and that the purpose of religion is for us to need God to fulfill our needs. However, it appears that Rambam disputes both of these premises. In Guide for the Perplexed 2:39 he writes:
It is clear ...
The Ohr Chaim on Bamidbar 3:45 writes that the firstborn will serve in the Third Temple.
שאמרו ז"ל עתידה עבודה שתחזור לבכורות
R' Yonathan Eybeschutz writes in Ahavat Yonatan on the haftorah for Emor, that in the future, there will be atonement for the sin of the golden calf, and thus the firstborn will return to temple service.
I've seen many who are ...
The best source for an apocalyptic doomsday event (that I have seen) is from an ancient mystical text Sefer Heichalot (http://en.wikipedia.org/wiki/Hekhalot_literature) 5:4-5 and 6:1-2 which is cited by Rabenu Bechaya in Bereishis 44:17 (page 349 Chavel edition)
Among other fascinating and (mind-blowing) novel ideas he writes (translation mine):
A cloud ...
Yerushalmi, Megilah 1:5 (7a):
ר' יוחנן ורשב"ל ר' יוחנן אמר הנביאים והכתובים עתידין ליבטל וחמשה סיפרי תורה אינן עתידין ליבטל מה טעמא (דברים ה) קול גדול ולא יסף רשב"ל אמר אף מגילת אסתר והלכות אינן עתידין ליבטל נאמר כאן קול גדול ולא יסף ונאמר להלן (אסתר ט) וזכרם לא יסוף מזרעם הלכות (חבקוק ג) הליכות עולם לו
Rabbi Yochanan said that all the Nevim and ...
Mahari Kra, Radak, and Metzudos all say that the Magog of Gog uMagog is the same nation which is listed among Yefes' descendents.
(Rashi also compares the name, but it is not clear to me that he identifies them as the same nation.)
It is mentioned in the Ohr Hachaim Bereishis 49:28 דבר... He mentions this idea that bechorim will serve in the future based on Chazal.There is more on this topic , this is what I have for now,ayin sham.
The Leviathan - Babylonian Talmud, Baba Batra 74b
The Shor HaBor - Babylonian Talmud, Baba Batra 74b
The Light from the first day of creation. Rashi.
The Chilazon according to the Arizal source?
The bottle of the manna - Horios 12a, Yoma 52b
The Aaron with the tablets - Mishna Shekalim 6:1-2, Horios 12a, but see Yoma 53b
The anointing oil - Horios 12a, Yoma ...