Both high profile libertarians and the libertarians I know seem to fall in one of two camps.
One camp is the Juedo-Christian libertarian. Upon entering the promised land and setting up a new government, Joshua said “Choose ye this day whom ye will serve. But as for me and my house we will serve the Lord.”
But Judeo-Christian libertarianism goes back even farther to rejection of the question of the first genocidal murderer, Cain, who asked God: “Am I my brother’s keeper?”
The resounding libertarian response is “I am not my brother’s keeper!” For these libertarians, the preeminent accountability is to God and not to man.
Atheist/agnostic is the second type of libertarian. They see the collectivism of institutional religions that accept the false premise of Cain. They reject that false premise because it cannot withstand logical scrutiny. Pure logic becomes the basis of their libertarianism.
I suspect there are other libertarian variations. I’ve met libertarian pagans, Sikh and Bhuddists. But I didn’t really understand where they were coming from.
Samuel, of course, prayed about it, and the Lord replied that in seeking a king the people had rejected Him, that He should not reign over them.
So, the Lord had Samuel list a couple of dozen reasons to the Israelites why a king is a really, really bad idea. I suppose the list could be pretty well excerpted: "he will take ... your asses, and put them to his work" without losing too much of the meaning, but it's really worth reading v. 10ff in full for context.
"Nevertheless the people refused to obey the voice of Samuel; and they said, Nay, but we will have a king over us."
So then, Samuel picks the most eligible man in Israel, Saul, to be king ("there was not among the children of Israel a goodlier person then he").
Even so, it worked out just as God said it would, though the prophecy did not mention that that king would also commit suicide after defeat on the battlefield and the disgrace of consulting a psychic.
Now, if the best man among God's own chosen people can't make a government good, what chance is there that anyone can? Regardless of their religion, all libertarians really do believe this part of the Bible.