The 3rd book of the Torah begins with Parashat Vajikra, this one
is also called "Torat Kohanim" because in this and the
9 following Parashot all the rules for the Kohanim and for the
stand in basket. We dive into a world that we
very difficult for us to imagine. We read like that
Kohanim sort and burn the heads and entrails of the sacrificial animals, detach the internal organs and skin, and finally sprinkle blood on the misbeach with their fingers.
Nowadays we wish every day in the tefila that the 3rd beit hamikdash should be established and we can finally serve Hashem in the temple again:
יהי רצון מלפניך . . שיבנה בית המקדש במהרה בימינו ותן חלקנו בתורתך
We must ask ourselves whether Hashem requires us to make animal sacrifices in the 3rd Beit hamikdash as well. If so, it will not be very easy for us to bring the Korbanot and justify this action socially. Just imagine the headlines this action would bring: "Jews burn thousands of cattle for sinning!" or "How many more animals must die before the God of the Jews is satisfied?"
Fortunately, the Rambam can reassure us, he points out in his work More Newuchim (Guide of the Lost Ones) that the animal sacrifices commanded in the Torah are only intended for that time. Rabbi Abraham Isaak Hakohen Kook, who was one of the most important spiritual leaders of the Bne-Akiva, is also of the conviction that only food offerings are made in the 3rd Beit hamikdash, but no animal sacrifices.
Although we will probably never make animal sacrifices again, and unfortunately we don't currently have a beit hamikdash or mishkan, we can still learn something from the Korbanot. To do that, we should first understand why Hashem ordered to bring Korbanot, does he need the smoke of the Korbanot up there? Or does he like the smell of burned flesh? The secret of the Korbanot lies in the word קורבן itself. !קרב The Shoresh of 'to approach). The Korbanot are not a gift for Hashem( ְל ִה ְת ָק ֵרב which he desires, but a means of approaching him. With Korbanot we are approaching Hashem!
As already mentioned, we don't have a beit hamikdash today, but each of us can still bring korbanot, just in a different form. The principle of sacrifice is to give something that is valuable to us. Such as time or money, nowadays we do not approach Hashem with animal sacrifices but with good deeds like zedaka, tefila and so on.