The Torah states: "And if there live with you a stranger, and he would offer a Pesach (Passover) to the Lord" (Exodus 12:48). The Mekhilta immediately identifies a potential misunderstanding. Someone might read this verse and conclude that a proselyte — a non-Jew who converts to Judaism — can offer the Passover sacrifice immediately upon conversion, at any time of year.
The Torah closes that gap with the next phrase: "and he shall be as the citizen of the land." The Mekhilta reads this as an equalizing principle with precise legal force. Just as a native-born Israelite offers the Pesach on the fourteenth of the month of Nissan — and only on the fourteenth — so too the proselyte. No special timing, no accelerated schedule, no immediate sacrifice to mark the conversion. The proselyte waits for the appointed day, just like everyone else.
This ruling carries a deeper message about what it means to join the community of Israel. A convert does not get a separate version of the commandments. There is no beginner's Pesach, no abbreviated ritual for newcomers. From the moment of conversion, a proselyte stands on exactly the same footing as someone whose ancestors stood at Sinai. The same date, the same lamb, the same obligations.
The phrase "as the citizen of the land" is not a consolation prize — it is a full equation. The Mekhilta sees in this verse the Torah's insistence that conversion creates complete equality, with no asterisk and no waiting period beyond what applies to every Jew.