Instead of understanding and following the teachings of Jesus, the Christians argued and quarreled about the nature of Jesus's divinity and about the Trinity. They called each other heretics and persecuted each other and cut each other's heads off. There was a great and violent controversy at one time among different Christian sects over a certain diphthong. One party said that the word Homo-ousion should be used in a prayer; the other wanted Homoi-ousion-this difference had reference to the divinity of Jesus. Over this diphthong fierce war was raged and large numbers of people were slaughtered.