"The content of this passage is Peter exhorting the church in the light of the fact that Jesus is going to come soon, and he doesn't know how soon, but he's speaking to the fact that Christ could come at any time, and they are in the end times, and therefore how should they behave, and what should they know about themselves."
"It's a group of people who believe in Jesus together, and are striving together for the faith of the gospel, to make the gospel known, to help one another work out, apply, live out the gospel in their own lives."