The Torah says in its description of life after the Exodus: "And you do what is just in His eyes" (Exodus 15:26). The Mekhilta identifies this as a reference to integrity in one's business dealings with other people. Doing what is "just in God's eyes" starts not with ritual observance but with honest commerce.
The teaching goes further with a remarkable claim: if a person deals faithfully with others, people take pleasure in him, and it is accounted to him as if he fulfilled the entire Torah. The whole of Jewish law — all 613 commandments — can be encapsulated in the principle of honest dealing. This is not hyperbole. The Mekhilta presents it as a direct reading of Scripture.
The passage then decodes two additional phrases from the same verse. "And you give ear to His commandments" refers to the civil laws — the mishpatim that govern society. "And you keep all His statutes" refers to the laws governing illicit sexual relations — the boundaries of intimacy that structure family life.
Taken together, the verse maps out a complete ethical program in three parts: honest business, civil justice, and sexual morality. The rabbis saw these as the three pillars of a functioning society. And they placed business ethics first. Before discussing courts and before discussing family purity, the Torah addresses the marketplace. The implication is clear: a society that cannot maintain honest dealings between buyer and seller has no foundation on which to build anything else.