Bemidbar

Considering why the Red Heifer ritual is mentioned at the end of the 40 years in the desert, as opposed to the rest of the Temple rituals mentioned in Leviticus. Hint: It has to do with body building, not going to the bathroom, and - you guessed it - the Land of Israel.

Rav Kook explains why the constructive punishment for murder was the destruction of Y'rushalayim & exile from Israel. G-d loves life and is the force behind all life, and in fact, defines "Good" as "Life". The goal of the Torah is Tahara or Life, and accordingly murder, or the taking of life is not only tragic morally but ideologically and philosophically, stands, like Tum'ah, in total contradiction to the message of life, which supersedes the other mitzvot. Israel is meant to be a life-educating "Light to the Nations" from Y'rushalayim, through building an ideal Jewish State, but if we aren't fulfilling that goal, then our capitol and national life are counter-productive.