Holiness is an uncomfortable subject for most believers. We have no problem assigning holiness to God as we sing, “You Are Holy, Oh Lord!” But our minds get muddled when we think of our own holiness because we don’t want to appear holier than thou. So what does it mean to be holy? And how can we live holy lives around unholy people? In short, how can we be “children of light” (Ephesians 5:8) while walking in a dark world?