God ordered the children of Israel countless times in the Bible to go in and completely exterminate whole countries killing everyone. Why did he do that if it was against his commandments? Because it was as Bro. Randy said, it was justified killing. The nations had sinned against God, and done sins worthy of death so God used Israel to wipe them out. God also commanded Israel to stone many people for certain wrongs they commited under the law. The punishment was death for many of the sins(murder, adultry, fornication, ect...). So there is a difference in murdering the innocent, and killing the ones who deserve it. That is the reason that I support Capital Punishment.