[In 1 Peter 1:17, Peter is introducing] and he hath thesis the speakers each of the even they are strangers strange land. The first reason is give God, not society, is the ultimate judge and indeed also the one who ransomed them. Therefore it is God, not society, approval they should seek wrath they should fear.
The audience is not called “resident aliens” in relationship to God. To the contrary, they are God’s ransomed shall. But in relationship to society, we continue to have this resident alien status. Peter suggested that the controlling paradigm for their life and conduct should be the relationship with God, of the relationship society. In other words, mere assimilation is the last thing on his mind, yet since Peter is promoting an event listed faith, he does want the audience to be good neighbors their cities and towns in ways that are compatible with their faith.
Ben Witherington III,
Letters and Homilies for Hellenized Christians