The second reason was that swearing was so important was that people believed if you would swear by God’s bones, or by Christ’s fingernails, you were actually affecting their bodies up in Heaven. Mohr notes, “to us it doesn’t make any sense.. but in makes sense as a sort of Catholic Eucharist, where a priest said some words and makes God’s physical body which he then breaks and eats, and shares among the congregation. And in swearing anybody could say these magic words that could tear Christ’s body part. So this was a kind of terrifying language that people were tremendously worried about, and so if you wanted to you insult someone or express joy or you stubbed your toe and wanted to relieve the pain, those were the words that you were going to use because they had this tremendous power.”