Have thou ever in thy mind this seal, which for the present has been lightly touched in my discourse, by way of summary, but shall be stated, should the Lord permit, to the best of my power with the proof from the Scriptures. For concerning the divine and holy mysteries of the Faith, not even a casual statement must be delivered without the Holy Scriptures; nor must we be drawn aside by mere plausibility and artifices of speech. Even to me, who tell thee these things, give not absolute credence, unless thou receive the proof of the things which I announce from the Divine Scriptures. For this salvation which we believe depends not on ingenious reasoning, but on demonstration of the Holy Scriptures.

[Cyril of Jerusalem (c. 315-387), Lecture IV.17, “The Catechetical Lectures of S. Cyril, Archbishop of Jerusalem,” translated by Edwin Hamilton Gifford, in Philip Schaff., ed., Nicene and Post-Nicene Fathers, Second Series, Volume 7, (Peabody, MA, USA: Hendrickson Publishiers, Inc., reprinted 2004), 23.]

March 18 is the feast day of St. Cyril of Jerusalem on Roman Catholic, Eastern Orthodox, and Anglican church calendars.