What are some books that led you to an understanding/embrace of Reformed Theology?

Including the Bible, any passage of scripture or any other author, what work/book convinced you of the truths of reformed theology? When did it happen?

forum comments

Arthur Pink's "The Sovereignty of God" was foundational and the means God magnified my view of Himself and my understanding of the Bible. Happened about 5 years. My life has never been the same way again. The opening words of the book still echo well in my thoughts after all this time. "Who is regulating affairs on this earth today—God, or the Devil? That God reigns supreme in Heaven, is generally conceded; but that He reigns supreme over this earth, is almost universally denied—if not directly, then indirectly. More and more are men in their philosophizing and theorizing, relegating God to the background." - Arthur Pink.

Lorraine Boetner's "Reformed Doctrine of Predestination"