The primacy of knowledge the apostle shows to those capable of reflection, in writing to those Greeks of Corinth, in the following terms: "But having hope, when your faith is increased, that we shall be magnified in you according to our rule abundantly, to preach the Gospel beyond you." He does not mean the extension of his preaching locally: for he says also that in Achaia faith abounded; and it is related also in the Acts of the Apostles that he preached the word in Athens. But he teaches that knowledge (gnosis), which is the perfection of faith, goes beyond catechetical instruction, in accordance with the magnitude of the Lord's teaching and the rule of the Church.
Source: The Stromata Book 6