Strangers and Aliens in 1 Peter (more thoughts)

In his first epistle, Peter is writing to a number of Christians he identifies as “strangers” (1:1) and “aliens” (2:11). There are several theories of what being a “stranger and alien” entails but, as I stated in a previous post, I hold on to the traditional rendering that being a stranger and alien means that Christians are different in a culture that is hostile to God. But, exactly how are we different?