'Stranger' in the Bible

'And a son of eight days is circumcised by you; every male to your generations, born in the house, or bought with money from any son of a stranger, who is not of thy seed;

and all the men of his house -- born in the house, and bought with money from the son of a stranger -- have been circumcised with him.

And Jacob saith unto his household, and unto all who are with him, 'Turn aside the gods of the stranger which are in your midst, and cleanse yourselves, and change your garments;

And they give unto Jacob all the gods of the stranger that are in their hand, and the rings that are in their ears, and Jacob hideth them under the oak which is by Shechem;