The Council did two things, anathematise the Arian positions (at the end of the Creed), and establish the true doctrine by the insertion of the phrases, “of the substance” and “one in substance.” Athan. says that the Arians must not criticise the latter before they had cleared themselves of the former. Thus he says presently, that they were at once irreligious in their faith and ignorant in their criticism; and speaks of the Council negativing their formulæ, and substituting those which were “sound and ecclesiastical.” vid. also n. 4.