God’s purpose and destiny for Israel required her to be separate and holy among all nations. While God insisted that she welcome the stranger into her midst, it was with the provision that the stranger would follow the same laws as the Jews.
This commandment is just as important today as it was in the time of Moses. Rather than accepting the God (and laws) of Israel, the stranger brings a false god and culture into our midst.
Numbers 15: 13-16
All who are native-born shall do these things in this manner, in presenting an offering made by fire, a sweet aroma to the Lord. And if a stranger dwells with you, or whoever is among you throughout your generations, and would present an offering made by fire, a sweet aroma to the Lord, just as you do, so shall he do. One ordinance shall be for you of the assembly and for the stranger who dwells with you, an ordinance forever throughout your generations; as you are, so shall the stranger be before the Lord. One law and one custom shall be for you and for the stranger who dwells with you.’
PROCLAIM, “THERE WILL BE ONE GOD, ONE LAW AND ONE CULTURE IN ISRAEL FOR NATIVE AND STRANGER.”