Joshua 2:17-20

17The men said to her, “We shall be blameless and free from this oath which you have made us swear,

18unless, when we come into the land, you tie this cord of scarlet thread in the window through which you let us down, and bring into the house your father and your mother and your brothers and all your father’s household [so that they will be safe].

19But if anyone goes out the doors of your house into the street, his blood shall be on his own head [that is, his own responsibility], and we shall be blameless and free [from our oath]; however, if a hand is laid on anyone who is with you in the house, his blood shall be on our head.

20But if you tell [anyone] this business of ours, we shall be blameless and free from the oath which you made us swear.”