Christians have the job to live among the world, but not of the world. In this sermon about the cleansing of the temple, Dr. Martyn Lloyd-Jones speaks from John 2:13–17 about what it looks like to live a life that stands apart from the world. He begins by stating that Christians must know that Jesus is the answer to everything. This means they must choose to listen to Him over anything else. Rather than twisting His words to fit into what they want them to mean, they need to clearly understand and live out the truths He gives through His holy word. Dr. Lloyd-Jones points out that that the most important thing in the Christian walk is their relationship with God. However, the greatest danger is to misuse that relationship. He relates this to the Israelites of the Old Testament, and reminds that God is the true judge and knows the heart. While He is the judge, He has also come to cleanse and restore. He has come to give hearts that love Him and desire to honor Him. He has come to restore and shine through His people so that all the world can see Him.

http://www.mljtrust.org/sermons/cleanse-the-temple/