Hayom shisha v'esrim yom, shehaym shelosha shavuot vachamisha yamim baomer

In the Book of Genesis, G-d's original, uncompromised diet for humans was vegetarianism. In Genesis 1:29, G-d said, "See, I give you every seed-bearing plant that is upon all the earth, and every tree that has seed-bearing fruit; they shall be yours for food." As Rashi put it, "G-d did not permit Adam and his wife to kill a creature and to eat its flesh. Only every green herb shall they eat together." In 2:16, we read, "And the Lord G-d commanded the man, saying: of every tree of the garden, you may freely eat." In 3:18, we read, "[Y]ou shall eat the herbs of the field."