From the treatise Against Heresies by Saint Irenaeus

The Church, spread throughout the whole world, received this preaching and this faith and now preserves it carefully, dwelling as it were in one house. Having one soul and one heart, the Church holds this faith, preaches and teaches it consistently as though by a single voice. For though there are different languages, there is but one tradition. The faith and the tradition of the churches founded in Germany are no different from those founded among the Spanish and the Celts, in the East, in Egypt, in Libya and elsewhere in the Mediterranean world. Just as God’s creature, the sun, is one and the same the world over, so also does the Church’s preaching shine everywhere to enlighten all men who want to come to a knowledge of the truth. Now of those who speak with authority in the churches, no preacher however forceful will utter anything different – for no one is above the Master – nor will a less forceful preacher diminish what has been handed down. Since our faith is everywhere the same, no one who can say more augments it, nor can anyone who says less diminish it