I guess the phrase biblically justified being applied to a war fought strictly from and for nature and reason doesn’t really make sense to me. I know the nations of the world not in covenant with Christ fight wars with one or the other of them being more in the right morally. Wouldn’t it be better to say that the US was morally justified (if one thinks it was) in breaking away from England, than to say we were biblically justified?People have a natural right to wage war as a matter of self-defence. Civil government is founded in nature, but, like family government, should be perfected by grace. The fact that the American Revolution was not perfectly or even overtly Christian does not mean that it was invalid, as nature and reason are enough to tell us that tyranny ought to be resisted (the Bible, of course, further confirms what we know from nature and reason). To change the subject in order to illustrate my point, Britain's war against the Nazis was not fought "For Christ's Crown and Covenant", but was still biblically justified despite this deficiency.