Throughout her history, the Church has been cautious to safeguard the teaching from distortion. Just one wrong teaching of one ex-priest such as Arius, caused two popes, namely, Pope Peter the Seal of the Martyrs and Pope Alexandrus, to intervene. A council was held in Alexandria attended by a hundred bishops from Alexandria and Libya and another council was held at Nicea in 325 A.D. attended by 318 bishops from all over the world. All this was caused by one priest's error in teaching. There was a danger of his teaching spreading and nobody said: "Leave the matter alone; there is freedom of belief"!