Mankind — Created with the Image of God

At the foundation of Jewish law's approach to the value of human life is a single verse from the very first chapter of the Torah:

"And God created mankind with His image, with the image of God He created him, male and female he created them" (Genesis 1:27).

Jewish tradition treats this not as poetic flourish but as a load-bearing legal and ethical principle — one that applies to all of humanity, not to any one nation or group, since it describes the creation of the first human beings — Adam, created alone — the shared ancestor of every person alive, and thus refers to all of mankind.

A Principle With Legal Consequences

The Mishna draws out the practical weight of this idea directly, teaching that a single human life is treated in Jewish law as though it were an entire world:

Therefore was man created single in the world — to teach that whoever destroys a single soul, it is as if he destroyed an entire world. And whoever saves a single soul, it is as if he saved an entire world. (Mishna, Sanhedrin 4:12; Kaufmann edition)

This teaching is explicitly universal in the Mishna's own framing — it is not limited to Jewish lives, but stated as a general principle about the value of any human soul, precisely because every human being descends from the single first human created with God's image.

Why This Anchors the Rejection of Genocide

A legal tradition that begins from the premise that every individual person carries the image of God, and that destroying a single life is comparable to destroying a world, has no coherent path to sanctioning the indiscriminate destruction of a people. This principle underlies the specific wartime protections examined elsewhere — the requirement of suing for peace before war and allowing civilians to flee a besieged city — and explains why Jewish law's rules of war are built around minimizing loss of life rather than maximizing it.