"One Torah shall there be for the citizen and for the stranger" (Exodus 12:49). This verse — one of the most sweeping declarations of equality in the Torah — might seem redundant. After all, the Torah already stated that a proselyte who offers the Pesach (Passover) "shall be as the citizen of the land" (Exodus 12:48). If the convert is already equated with the citizen, why repeat the principle?
The Mekhilta explains that without this additional verse, the equality between citizen and convert would be limited to the Pesach alone. The earlier verse appears specifically in the context of the Passover sacrifice. A reader might conclude that the proselyte is treated as a citizen only for purposes of this one offering — but that in all other areas of Jewish law, some distinction might remain.
"One Torah shall there be" shatters that limitation. The word "Torah" encompasses the entirety of Jewish law — every mitzvah, every obligation, every privilege. The proselyte is not merely equal at the Passover table. The proselyte is equal in everything. The same commandments apply. The same standards are expected. The same spiritual standing is recognized.
This verse became a foundational proof text in rabbinic Judaism for the complete legal equality of converts. The Mekhilta reads it as the Torah's final word on the subject: whatever applies to a native-born Israelite applies to the stranger who has joined the covenant. One Torah. No exceptions, no tiers, no second-class membership. The convert who enters the covenant enters it whole.