Libertarian Freedom and God
As you know, those who believe in "libertarian free will" declare the ability to choose otherwise...
Given that God is absolutely holy and without sin by His very nature, it would actually be heretical to declare that God has libertarian free will ... for it would mean that He would have the "freedom" to do otherwise ... i.e. to be unholy, if He so chose to be.
However, the Bible defines freedom relative to sin (See John 8)... so God being absolutely holy makes Him the most free. This is great evidence that libertarian free will is a philosophical construct and not based on biblical presuppositions of freedom.