Travelers, sojourners, strangers, Israelites who are poor—Leviticus has a lot to say about the so-called disadvantaged. But who are these people and what's really going on?
The reason the book lumps immigrants and the poor together is land; in particular, the fact that immigrants and poor Israelites don't have any. In an agricultural society such as ancient Israel, this means they're stuck without a way to make money. And as you might imagine, that makes them dependent on everyone else. Immigrants pose a double puzzler because unlike Israelites, they also don't have a deeper connection to the Promised Land through the divine covenant.
So should the Israelites simply let foreigners and the poor starve? Get bought and sold as slaves? Have any legal rights at all?