It is infinitely better to feel the weight of glory in the Scriptures, to know the contours of the shape of Scripture even if you don’t know your way to the specific chapters and verses, than to have detailed memorization of Scripture as a cognitive category. There are some, I fear, who will be able to diagram in Greek the last words they ever hear voiced: “Depart from me, you worker of iniquity.” Such cognitive expertise is of little use in wrestling demons.
Russell D. Moore, Tempted and Tried: Temptation and the Triumph of Christ (pp. 182-183)