Cyril of Jerusalem: Our Saving Faith is Based Only on Scripture

Cyril of Jerusalem (318-386): Keep this seal in mind at all times. I have spoken of it summarily, touching the main points, but if the Lord grant, I shall discuss it more fully later, to the best of my power, with proof from the Scriptures. For in regard to the divine and holy mysteries of the faith, not even a casual statement should be delivered without the Scriptures, and we must not be drawn aside merely by probabilities and artificial arguments. Do not believe even me merely because I tell you these things, unless you receive from the inspired Scriptures the proof of the assertions. For this saving faith of ours depends not on ingenious reasonings but on proof from the inspired Scriptures.

Fathers of the Church, Vol. 61, Catechesis IV.17 (Washington, D.C.: The Catholic University of America Press, Inc., 1969), pp. 127-128.