Halakhah zu Schemot 12:43

That we not feed of the Pesach sacrifice to an apostate Jew: That we not feed of (allow to eat from) the Pesach sacrifice to a Jew that is a habitual sinner of idolatry, as it is stated (Exodus 12:43), "no foreigner shall eat of it." And the understanding (Mekhilta DeRabbi Shimon Bar Yochai 12:43) comes upon it that [this 'foreigner'] is a Jew whose actions have become foreign to his Father in Heaven. And so did Onkelos translate.