'...repetition is intentional. You and I are not machines. We are not computers that can instantly do new things and behave in new ways as soon as some fresh code is plugged into our memories. If you and I did not need repetition in order to learn or even to stay on course, we could read the Bible once and instantly come to full spiritual maturity. But that's just not the way it works. We learn things, especially spiritual things, at different depths and levels. Everyone who has been a Christian for more than a short period of time has had the experience of receiving fresh illumination from a passage of Scripture that may have been read dozens or even hundreds of times.'
Paul David Tripp, Broken-Down House, p.192.