PAPAL PRIMACY IN HISTORY 73 Finally, the Council of Florence defined that : The Roman Pontiff is the true Vicar of Christ, head of the whole Church and the father and teacher of all Chris- tians ; and that to him in blessed Peter our Lord Jesus Christ gave the full power of feeding, ruling, and gov- erning the universal Church. In fulfilment of this pastoral office, Our Predecessors strove ever unweariedly to spread abroad the salutary doctrine of Christ among all the nations of the earth, and with equal care watched that where it had been received it might be preserved pure and undefiled. Hence the bishops of the whole world, at one time singly, at another assembled in synod, following the long-established custom of Churches and the form of the ancient rule, informed this Apostolic See of thofce dangers especially which appeared in matters of faith, that, where the faith can suffer no defect, there the losses of faith might be most effectually made good. And the Roman Pontiffs, as the condition of times and circumstances suggested, now assembling oecu- menical Councils, or searching the mind of the Church scattered abroad over the world, at times by particular synods, again using other helps which divine provi- dence supplied, defined those things to be held, which with God's help they had recognised as in harmony with the sacred Scriptures and apostolic traditions.