When the people who had gathered to celebrate Passover in Jerusalem witnessed God's power in his church, they were filled with wonder, amazement, and some confusion. They knew something big had happened, but they didn't know what it meant for them. That was the moment when Peter opened his mouth and began to preach. In this sermon, Pastor Philip explains how God shines in the darkness of our hearts through the work of the Holy Spirit and the proclamation of his word.