Peter has been reminding us of the necessity of suffering, but suffering simply cannot be enjoyed for its own sake. Here he draws our attention to the glory that awaits us as God’s people in the presence of our Lord.
Disorder is more probable than order. Think of it as entropy. Attribute it to the Second Law of Thermodynamics. Whatever mental category you use, disorder is more probable than order and that principle applies to churches as well as physical substances.
Unity in the church is achieved by design. If we don’t think about what we are doing as a body, disorder will be more probable than order. If we are intentional about working together and putting others before ourselves, unity will be the result.
This is a letter full of joy. The words “joy” or “rejoice” appear in some form 16 times in 14 verses. Unlike many of Paul’s letters, this one was not written to correct problems, but mainly as an expression of love and thanks to a church that partnered with him in the spread of the gospel.