The answer is: Thou shalt not commit adultery

Exo 20:14

The seventh commandment, “Thou shalt not commit adultery,” resonates deeply not only in its spiritual context but also in societal structures throughout history. This directive highlights the sanctity of relationships and the value placed on fidelity. It's fascinating to find that nearly every ancient civilization had measures against adultery, displaying its universal importance.

Adultery, in modern terms, refers to sexual infidelity, but in the biblical context, it held severe social and religious consequences. Delving into the Hebrew approach, one learns that adultery was not merely about unfaithfulness in marriage—it symbolized a violation of trust, a break in the covenant. This mirrors how Israel’s relationship with God was often expressed in terms of marital fidelity. When the people turned to other gods, it was likened to unfaithfulness to their divine partner, underlining the intimate bond meant to exist through covenant.

Interestingly, the Mishnah extends this commandment, illustrating its complexities by revealing how it applied to the whole community and even the witness involved in testifying against an adulterer—there was accountability layered within. Stories like that of David and Bathsheba echo through time as stark examples of failure to uphold such a fundamental commandment and the ripple effect it brings.

Thus, while surfacing centuries ago, the strength of this command remains ardent—protecting integrity and love through sacred commitments shapes communities and preserves trust.