On Unnecessary Oaths

It has been a common vice almost in all ages, to swear lightly and inconsiderately. For so bad is our nature that we do not consider what an atrocious crime it is to profane the name of God. For though the Lord strictly commands us to reverence his name, yet men devise various subterfuges, and think that they can swear with impunity. They imagine, then, that there is no evil, provided they do not openly mention the name of God; and this is an old gloss. So the Jews, when they swore by heaven or earth, thought that they did not profane God’s name, because they did not mention it. But while men seek to be ingenious in dissembling with God, they delude themselves with the most frivolous evasions…[James] brings the best remedy to correct the vice which he condemns, that is, that they were habitually to keep themselves to truth and faithfulness in all their sayings. For whence is the wicked habit of swearing, except that such is the falsehood of men, that their words alone are not believed? For, if they observed faithfulness…in their words, there would have been no necessity of so many superfluous oaths…James teaches us that the fountain ought to be removed; for the right way of healing is to begin with the cause of illness. – John Calvin