So it will be, on the heels of your observance of these judgments of Mine…that G‑d will love you, bless you, increase your numbers, bless the fruits of your womb and the fruits of your land, your grain, your wine, and your oil, the offspring of your animals and your wealth of sheep… (Deut. 7:12-13)

All mitzvahs can be distributed over a wide spectrum between two poles:

There are mitzvahs that we judge to be of practical utility. Torah calls these mishpatim —judgments —because they engage the discretionary judgment of our minds and hearts. For example, the prohibitions against theft and violence.

And then there are mitzvahs whose reasoning is entirely beyond us, even contradictory to our understanding. Torah calls these chukim—from the word chakak, meaning “to engrave in stone.” We do them as though they are simply built into our hardware, wired into the tough, desensitized skin of our heels. At this end of the spectrum, you’ll find laws of ritual impurity, most of the laws of forbidden foods, as well as many of the details of otherwise reasonable halachah.

There’s a beauty to chukim. We don’t keep them for their utility or because they make sense to us. We keep them for no reason other than that G‑d asked us to. They are for Him alone.

In that way, they connect us to something far beyond ourselves, to an infinite G‑d who has brought us into His own unfathomable view of His creation and its purpose. In chukim, we transcend ourselves.

And, although it’s wonderful to understand and feel the goodness of all that we are doing, nevertheless, there’s a hazard to mishpatim. When everything makes sense to us and serves us well, we easily become captives of our tiny reality-bubble and lose connection with the mystery and wonder beyond ourselves.

So Moses tells us to listen with our heels, to connect our minds to our inner hardware, to do mishpatim as chukim.

Because, in truth, every mitzvah, even a simple rule that we would have figured out on our own, is part of a covenant and connection that entirely transcends our limited reality. Every mitzvah is a connection to the One who instructed us to do the mitzvahs.

And when we make that connection, wiring the most ultimately transcendental into our minds and our hearts and all the way down to the tough skin of our heels, the universe follows in concert: Infinite, divine love expresses itself not only in spiritual forms, but all the way down to the quantifiable physical world—in “the fruits of your womb and the fruits of your land, your grain, your wine, and your oil, the offspring of your animals and your wealth of sheep.”

In a way, it’s a natural consequence: We make our human nature divine, and G‑d makes the nature of His universe reflect that miracle—with children, health and material wellbeing.

Based on Likutei Sichot volume 19, pg. 89ff.