Don't be weary of the word

 Luther's commentary on Galatians, commenting on 1v11:

God creates faith in us through the Word. He increases, strengthens and confirms faith in us through His word. Hence the best service that anybody can render God is diligently to hear and read God's Word. On the other hand, nothing is more perilous than to be weary of the Word of God. Thinking he knows enough, a person begins little by little to despise the Word until he has lost Christ and the Gospel altogether. 
Let every believer carefully learn the Gospel. Let him continue in humble prayer. We are molested not by puny foes, but by mighty ones, foes who never grow tired of warring against us. These, our enemies, are many: Our own flesh, the world, the Law, sin, death, the wrath and judgment of God, and the devil himself.