2 Kings 10:24

And when they went in to offer sacrifices and burnt offerings,
&c.] To Baal, all things being ready for them:

Jehu appointed eighty men without;
without the temple of Baal, at the several doors and avenues of it:

and said, if any of the men whom I have brought into your hands escape,
he that letteth him go, his life shall be for the life of him;
should be put to death for it in his room; the life of a watchman set to guard should go for the life of one that escaped.