All Torah Zchuyot to be for the salvation of Chayalim:
From the Sefer Pniney Halacha of Rav Melamed:
1: There's a Mitzvah to separate Terumah and Maysarot from our wheat and fruits which grow in Israel.
2: Unfortunately, since the Beit Hamikdash has been destroyed we can't fulfil the mitzvah of eating Terumot as Kohanim must eat the produce in a state of purity, and now we are all (Kohen and Non-kohanim) impure- considered impure. Anyone who has been under the same roof as a dead person, or touched a metal vessel which came into contact with a dead person-is considered Tameh, and only through a purification process which included the ashes of a dead cow can one be purified...
As an aside, in recent yeats several red cows have been brought to Israel for the purpose of attain this red cow. And the opinion of the rambam and others is that the ash of the red cow can be sprinkled even without a temple...
See Machon Mikdash for more on this topic. A pure cohen must be available, but that too is certainly within the realm of possible, if we raise the kohanim to not come into contact with impurity.
3: In addition the fruits of Mayser Sheni need to be eaten in purity near the mizbeach in Jerusalem near the mizbeach, and we don't have a mizbeach or beit Hamikdash.
4:We also have an issue regarding Mayser Rishon, which is to be given to the Levi, as we haven't been checking their lineage since the destruction of the mikdash, (in mikdash times we needed rot check the lineage of the Leviim for their Avodah in the mikdash), but now we don't keep track of it. Nonetheless, as we shall discuss Lmaysa we do have to fulfil Mayser rishon and give the fruits to a Torah scholar Levite.
5: The only Mayser which we must give for sure is Mayser Ani in the 3rd and 6th year of the Shmittah cycle. But since most of the nation is in exile this would be a rabbinical mitzvah.
6: The foods we have are sanctified by their connection to our holy values. And until we don't separate trumah and mayser, they are forbidden to be eaten, and the rabbis call it Tevel, from a language of Tov-la, and we can't use them for the sake of planting...
Now let's start from the beginning...
From the Sefer Pniney Halacha of Rav Melamed:
1: There's a Mitzvah to separate Terumah and Maysarot from our wheat and fruits which grow in Israel.
2: Unfortunately, since the Beit Hamikdash has been destroyed we can't fulfil the mitzvah of eating Terumot as Kohanim must eat the produce in a state of purity, and now we are all (Kohen and Non-kohanim) impure- considered impure. Anyone who has been under the same roof as a dead person, or touched a metal vessel which came into contact with a dead person-is considered Tameh, and only through a purification process which included the ashes of a dead cow can one be purified...
As an aside, in recent yeats several red cows have been brought to Israel for the purpose of attain this red cow. And the opinion of the rambam and others is that the ash of the red cow can be sprinkled even without a temple...
See Machon Mikdash for more on this topic. A pure cohen must be available, but that too is certainly within the realm of possible, if we raise the kohanim to not come into contact with impurity.
3: In addition the fruits of Mayser Sheni need to be eaten in purity near the mizbeach in Jerusalem near the mizbeach, and we don't have a mizbeach or beit Hamikdash.
4:We also have an issue regarding Mayser Rishon, which is to be given to the Levi, as we haven't been checking their lineage since the destruction of the mikdash, (in mikdash times we needed rot check the lineage of the Leviim for their Avodah in the mikdash), but now we don't keep track of it. Nonetheless, as we shall discuss Lmaysa we do have to fulfil Mayser rishon and give the fruits to a Torah scholar Levite.
5: The only Mayser which we must give for sure is Mayser Ani in the 3rd and 6th year of the Shmittah cycle. But since most of the nation is in exile this would be a rabbinical mitzvah.
6: The foods we have are sanctified by their connection to our holy values. And until we don't separate trumah and mayser, they are forbidden to be eaten, and the rabbis call it Tevel, from a language of Tov-la, and we can't use them for the sake of planting...
Now let's start from the beginning...