The second I Was A Stranger passage comes from Exodus 12:49. It says:
The same law applies both to the native-born and to the foreigner residing among you.
In context, this is in a passage talking about the observance of Passover festivities. The Jewish Virtual Library states that:
Many of the Passover observances still held were instituted in chapters 12 to 15 of the Exodus story in the Torah. Probably the most significant observance involves the removal of chametz (leavened bread) from homes and property.Chametz includes anything made from the five major grains (wheat, rye, barley, oats and spelt) that has not been completely cooked within 18 minutes after coming into contact with water (Ashkenazic Jews also consider rice, corn, peanuts, and legumes as chametz). The removal of chametz commemorates the fact that the Jews left Egypt in a hurry and did not have time to let their bread rise. It is also a symbolic way of removing the “puffiness” (arrogance, pride) from our souls.
It is interesting that the passage that Exodus 12:49 comes from is addressing circumcision. Circumcision was a sign of belonging to God’s covenant community. The mention of this makes me think that right out of Egypt there were some foreigners who had not been circumcised and made part of the covenant community.
In terms of being a Christian this is what I think it means for us: we need to seek implementation of the same laws for all people. While we do that we should also be willing to work with people to become a part of our community. Our immediate community should be the church, then our blood relatives, then the town/city we live in, and then our country. Thus, we should strive to preach the gospel and make legals and illegals a part of God’s covenant community, and help them to become a legally or more established part of our broader community through the proper channels.