“And for proof thereof, what is the cause that the heathen are so hardened in their own dotages? It is for that they never knew God’s Law, and therefore they never compared the truth with the untruth. But when God’s law come in place, then doth it appear that all the rest is but smoke insomuch that they which took themselves to be marvelous witty, are found to have been no better than besotted in their own beastliness. This is apparent. Wherefore let us mark well, that to discern that there is nothing but vanity in all worldly devices, we must know the Laws and ordinances of God. But if we rest upon men’s laws, surely it is not possible for us to judge rightly. Then must we need to first go to God’s school, and that will show us that when we have once profited under Him, it will be enough. That is all our perfection. And on the other side, we may despise all that is ever invented by man, seeing there is nothing but *fondness and uncertainty in them. And that is the cause why Moses terms them rightful ordinances. As if he should say, it is true indeed that other people have store of Laws: but there is no right at all in them, all is awry, all is crooked.”
* fondness = foolishness, weakness, want of sense and judgment
John Calvin
Sermons on Deuteronomy, sermon 21 on Deut. 4:6-9
“Then let us not think that this Law is a special Law for the Jews; but let us understand that God intended to deliver us a general rule, to which we must yield ourselves … Since, it is so, it is to be concluded, not only that it is lawful for all kings and magistrates, to punish heretics and such as have perverted the pure truth; but also that they be bound to do it, and that they misbehave themselves towards God, if they suffer errors to rest without redress, and employ not their whole power to shew greater zeal in their behalf than in all other things.”
John Calvin, Sermon on Deuteronomy, sermon 87 on Deuteronomy 13:5
In a treatise against pacifistic Anabaptists who maintained a doctrine of the spirituality of the Church which abrogated the binding authority of the case law Calvin wrote,
“They (the Anabaptists) will reply, possibly, that the civil government of the people of Israel was a figure of the spiritual kingdom of Jesus Christ and lasted only until his coming, I will admit to them that in part, it was a figure, but I deny that it was nothing more than this, and not without reason. For in itself it was a political government, which is a requirement among all people. That such is the case, it is written of the Levitical priesthood that it had to come to an end and be abolished at the coming of our Lord Jesus (Heb. 7:12ff) Where is it written that the same is true of the external order? It is true that the scepter and government were to come from the tribe of Judah and the house of David, but that the government was to cease is manifestly contrary to Scripture.”
John Calvin
Treatise against the Anabaptists and against the Libertines, pp. 78-79
“But it is questioned whether the law pertains to the kingdom of Christ, which is spiritual and distinct from all earthly dominion; and there are some men, not otherwise ill-disposed, to whom it appears that our condition under the Gospel is different from that of the ancient people under the law; not only because the kingdom of Christ is not of this world, but because Christ was unwilling that the beginnings of His kingdom should be aided by the sword. But, when human judges consecrate their work to the promotion of Christ’s kingdom, I deny that on that account its nature is changed. For, although it was Christ’s will that His Gospel should be proclaimed by His disciples in opposition to the power of the whole world, and He exposed them armed with the Word alone like sheep amongst the wolves, He did not impose on Himself an eternal law that He should never bring kings under His subjection, nor tame their violence, nor change them from being cruel persecutors into the patrons and guardians of His Church.”
John Calvin
Commentaries on the Four Last Books of Moses — p. 77.