That's unquestionably, factually, untrue when you're speaking of the government.
The GOVERNMENT recognizes no specific god, nor specific religion, as the states authority NOR is any singular religious text legal precedent in and of itself within this country.
Under the UNITED STATES GOVERNMENT something is MURDER when it is illegal UNDER THE LAW. The GOVERNMENT has the authority to act to certain degrees to protect against murder, when it falls within the bounds of what murder legally is UNDER THE LAW for THE GOVERNMENT.
God is not that Law, the Bible is not that Law, and Constitution and the laws that have sprung from it are.
The government does not derive any power to take actions contrary to it's constitutional limitations from "God".
You would have a fine argument if you had stated that you FEEL the government SHOULD act to protect against what you view as murder.
But you didn't, you stated that they have a "right" to. Governments are not people, governments have no inalienable rights, governments have the abilities set forth to them through their founding documents based on the social contract of the people who came together to form it. In our country, those "rights" are not to do as they feel in terms of "GODS" supposed laws to the contrary of the countries Constitution or legally passed laws.