This book should be viewed as an anthology because each of the seven studies was written at a different time with no deliberate connection to the other six. However, there is a thread running through these independent studies that ties them all together as they communicate different aspects of one unified message—being strategic in our spirituality. The first study deals directly with the interfaces discussed in the Bible where we connect with the world around us, the kingdom of heaven, and the kingdom of darkness. The second study in the series discusses finding the sensitive balance between two necessary interfaces—our need to spend time with God and our mandate to rise up and interact with the world. The third and fourth studies have to do with the biblical truths that we need to understand in order to accurately interface with our God, our world, and ourselves. In the letters to the seven churches of Asia Minor recorded in Revelation chapters two and there, only one of the churches is specifically mentioned as being at an interface; the church at Philadelphia is said to have a open door set before it. Interestingly, this is also the only church that is specifically mentioned as having a relationship with the Word of God. (Revelation 3:8, 10) Therefore, it is significant that we take some time to explore some foundational biblical truths that we must stand upon as we approach the various interfaces set before us. The fifth study takes us through the life of one of our most beloved biblical heroes—David, the shepherd boy who killed a giant and wrote beautiful psalms. Although his life was riddled with one failure after another, he somehow attained the report that he was a man after God’s own heart, which is the key to opening the doors of interface with the world that we learn about in the letter to the Philadelphian church. (Revelation 3:7) Next, we look at what it really means to have heart after the very heart of God—one that Bob Pierce, founder of World Vision, described as being broken with the same things that break the heart of God. Finally, the book concludes with a challenge to never fall short of the opportunities and blessing that God has provided for us as we interface with the One who sent us and those with whom we are to interface.