'Stranger' in the Bible

And the king saith unto Ittai the Gittite, 'Why dost thou go -- thou also -- with us? turn back -- and abide with the king, for thou art a stranger, and also an exile thou -- to thy place.

Sons of a stranger feign obedience to me, At the hearing of the ear they hearken to me.

Sons of a stranger fade away, And gird themselves by their close places.