Sojourners are temporary residents... folks who are only here for awhile, passing through en route to another destination. 1 Peter portrays God's people as those who live in a world where they're not entirely at home... displaced and out-of-step with the surrounding culture.
Why would God choose us for himself, give us new life (salvation) and then leave us in a world that can seem unwelcoming? What are we here for and how are we to conduct ourselves?
In this brief letter written by the apostle Peter, Christians find wisdom to guide them in their sojourn on earth. The gist of his message is, live winsomely - in a way that reflects well on our God.