Ruth 1:4

And they took them wives of the women of Moab; the name of the one was Orpah, and the name of the other Ruth: and they dwelled there about ten years.

Cross-reference

Deuteronomy 23:3 excludes Moabites from the assembly — the marriage to Moabite women here raises a legal tension.

Matthew 1:5 includes Ruth in Jesus' genealogy, showing how this Moabite widow became an ancestor of the Messiah.