The difference between a libertarian and a believer in the Besorah (Gospel) is that a true believer always believes there are consequences to choices whereas a libertarian does not necessarily. The latter may be said to be a libertarian libertine where as the former is a libertarian Christian/Messianic.
Not all believers are, unfortunately, libertarian. There are those of the authoritarian mindset who believe that non-believers should be forced into the same lifestyle as theirs by political means just as non-believers try to force believers to adopt theirs. Biblically-speaking, non-libertarianism is only true in a true theocracy set up by Yahweh with signs menifested according to the true tavnith (pattern) of the Torah but since there is no true theocracy on earth - and won't be until Messiah returns - we must be libertarians and grant others the freedom to live as they will provided they to not harm others or their families. Those who deny free agency are denying one of the fundemantal tenets of the Besorah (Gospel).
One of the great theological divisions in Christendom is that between Arminians (such as ourselves) and Calvinists because Calvinists believe there is a contradiction between Yahweh's sovereignty and man's free will. Calvinists have a major problem in reconciling this divine sovereignty with man's liberty to choose because they falsely define sovereignty, making Yahweh the cause of everything including sin. And yet they strangely make man accountable for what Yahweh apparently causes him to do. Trying to rationalise that simply results in theological, philosophical and epistemological contortions.
Yahweh is not the causative agent of sin or of evil though He does take responsibility for it as Sovereign. And He does so because He takes overall responsibility for the beings - malakim (angels) and men - which he created who bring in into the world. He accepts responsibility by providing a Deliverer (Saviour) to nullify the effects of sin.
Junius B.Reimensynder said that "the free-will of man is the most marvelous of the Creator's work's"  precisely because it is the clarion of liberty and the opposite of tyranny. And Yahweh is not a tyrant, as some envisage Him, because they have not understood that there is a difference between the Creator taking overall responsibily for everything and actually causing it. It is this gift of free will or free agency that precisely makes the 'gift of gifts' that makes possible every other gift of Elohim (God), for "without the power to choose, man could not consciously receive any moral or spiritual gift from God (Elohim)" .
We are consistently and repeatedly called upon by Yahweh to make moral choices, to love and obey Yahweh, receive the Besorah (Gospel), accept Yah'shua (Jesus) and obey the Torah (Law). Joshua challenged the nation of Israel to decide whom she would serve (Josh.24:15) and Yahweh makes the promise through Isaiah that those who are willing and obedient will "eat the good of the land" (Is.1:19, KJV). We, like Daniel, can make the decision that we will not defile ourselves with sin but walk the narrow Derech (Way) in the liberty we have been freely given.
Or we can choose not to...and suffer the consequences.
 Junius B.Reimensynder, Doom Eternal (N.S.Quiney, 1880)
 Dave Hunt, What Love is This? Calvinism's Misrepresentation of God (The Berean Call, Bend, OR: 2006), p.170