“Countless evils have arisen from ignorance of the Scriptures. From this the plague of heresies has broken out. From this there are neglectful lives. From this there are labors without benefit. For just as men deprived of daylight of this world do not walk rightly, so those who do not look to the gleaming of the Holy Scriptures must be frequently and constantly sinning, in that they are walking in the worst darkness.
John Chrysostom (from his Homilies on Romans, ca. 390 A.D.)
[Here is a similar quote from Chrysostom which I posted previously]