6 Bible Verses about Mercy Killings

To him which smote great kings: for his mercy endureth for ever: And slew famous kings: for his mercy endureth for ever: Sihon king of the Amorites: for his mercy endureth for ever:read more.
And Og the king of Bashan: for his mercy endureth for ever:

Thou shalt not kill.

Then shall he kill the goat of the sin offering, that is for the people, and bring his blood within the vail, and do with that blood as he did with the blood of the bullock, and sprinkle it upon the mercy seat, and before the mercy seat:

For he shall have judgment without mercy, that hath shewed no mercy; and mercy rejoiceth against judgment.

Who smote great nations, and slew mighty kings;

And Samson said, Let me die with the Philistines. And he bowed himself with all his might; and the house fell upon the lords, and upon all the people that were therein. So the dead which he slew at his death were more than they which he slew in his life.