6 Bible Verses about Mercy Killings

To him who overcame great kings: for his mercy is unchanging for ever: And put noble kings to death: for his mercy is unchanging for ever: Sihon, king of the Amorites: for his mercy is unchanging for ever:read more.
And Og, king of Bashan: for his mercy is unchanging for ever:

Do not put anyone to death without cause.

Then let him put to death the goat of the sin-offering for the people, and take its blood inside the veil and do with it as he did with the blood of the ox, shaking drops of it on and before the cover of the ark.

For the man who has had no mercy will be judged without mercy, but mercy takes pride in overcoming judging.

He overcame great nations, and put strong kings to death;

And Samson said, Let death overtake me with the Philistines. And he put out all his strength, and the house came down on the chiefs and on all the people who were in it. So the dead whom he sent to destruction by his death were more than all those on whom he had sent destruction in his life.