Joshua 2:17-18

17And the men said unto her, We will be blameless of this thine oath which thou hast made us swear.

18Behold, when we come into the land, thou shalt bind this line of scarlet thread in the window which thou didst let us down by: and thou shalt bring thy father, and thy mother, and thy brethren, and all thy father’s household, home unto thee.1