Martin Luther: “Diligently Learn the Word of God”
You should diligently learn the Word of God and by no means imagine that you know it. Let him who is able to read take a psalm in the morning, or some other chapter of Scripture, and study it for a while. This is what I do. When I get up in the morning, I pray and recite the Ten Commandments, the Creed, and the Lord’s Prayer with the children, adding any one of the psalms. I do this only to keep myself well acquainted with these matters, and I do not want to let the mildew of the notion grow that I know them well enough. The devil is a greater rascal than you think he is. You do as yet not know what sort of fellow he is and what a desperate rogue you are. His definite design is to get you tired of the Word and in this way to draw you away from it. This is his aim.
~ From Weimer Edition of Luther’s Works