There's little wonder that Peter begins his epistle by calling on us with a doxology of praise to the God and Father of our Lord Jesus Christ for the great mercy that He's displayed to us in regenerating us and giving us salvation through His Son, the Lord Jesus Christ.
Now remember, Peter is writing to some scattered believers but they are scattered in Gentile areas where they are experiencing hostility and persecution. And that would come from Jews, of course, in the area as well as Gentiles.
What do you do when you're an alien? What do you do when you're in a hostile world that is set against you? What do you do when you're suffering persecution, which—by the way—is delineated again and again throughout the remainder of this epistle as Peter goes back to remember their persecution, to identify it and tell them how to cope with it. What do you do when everything in the world around you is coming at you and there is great suffering? What do you do when you are subject, as it says in verse 6, to various trials and the distress that they bring? What do you do?...