'Stranger' in the Bible

but the seventh day is a Sabbath to Yahweh your God, in which you shall not do any work, you, nor your son, nor your daughter, nor your male servant, nor your female servant, nor your ox, nor your donkey, nor any of your livestock, nor your stranger who is within your gates; that your male servant and your female servant may rest as well as you.

If brothers dwell together, and one of them die, and have no son, the wife of the dead shall not be married outside to a stranger: her husband's brother shall go in to her, and take her to him as wife, and perform the duty of a husband's brother to her.