This process was not yet complete at the time of the First Council of Nicaea in 325, though substantial progress had been made by then. Though a list was clearly necessary to fulfill Constantine's commission in 331 of fifty copies of the Bible for the Church at Constantinople, no concrete evidence exists to indicate that it was considered to be a formal canon. In the absence of a canonical list, the resolution of questions would normally have been directed through the see of Constantinople, in consultation with Bishop Eusebius of Caesarea (who was given the commission), and perhaps other bishops who were available locally.