Key Thought: God has called you to be holy in a sinful world.

Context: Paul urges the Thessalonians to watch their walk before God (verses 1-2). These believers were to call to mind what he had taught them and put into practice what it meant to live for God in a world that was filled with impurity. One of the most important ways that we can walk in a way that is pleasing to God is to live pure in our relationships.