14 Now in the commencement of this discourse I promised to show that perjury would in any case result from opposite oaths; but truly the course of the history has proved more than I was establishing. It has exhibited not one, two, or three individuals, but a whole people, and not one, two, or three oaths, but many more transgressed. I might also make mention of another instance, and show from that, how one oath caused a still greater and more grievous calamity. For one oath entailed upon all the Jews the capture of their cities, as well as of their wives and children; the ravages of fire, the invasion of barbarians, the pollution of sacred things, and ten thousand other evils yet more distressing.
But I perceive that the discourse is running to a great length. Therefore, dismissing here the narration of this history, I beseech you, together with the beheading of John, to tell one another also of the murder of Jonathan, and the general destruction of a whole people (which did not indeed take place, but which was involved in the obligation of the oaths); and both at home, and in public, and with your wives, and friends, and with neighbours, and with all men in general, to make an earnest business of this matter, and not to think it a sufficient apology that we can plead custom.
Source: Homilies on the Statues (New Advent)