How do we know God's people are called strangers in the world?

In 1 Peter 1:1, Peter describes followers of Christ as 'strangers in the world' to illustrate their distinctiveness. This term signifies that believers are not at home in this world; their citizenship is in heaven (Philippians 3:20). As they live according to the values of God’s kingdom, they are often misunderstood and alienated by a society that does not share their beliefs. Therefore, the designation of 'strangers' is a reminder of the spiritual journey that believers undertake in a world that often opposes the gospel.