Robin Phillips tells us why praying to the saints is a problem. What I particularly like about this article is how he tells how praying to the saints works at the common man level. Often Roman Catholics and Eastern Orthodox will argue in the abstract, telling us that praying to the saints does not mean worshipping the saints and does not detract from Christ mediatorial work. While in theory this works, in reality praying to the saints often does lead to both of these things.
John Piper tells the difference between entertainment oriented preachers and bible oriented preachers.
An excerpt from J.C. Ryle on how someone knows if they love Christ or not.