The writer had given nearly three chapters of exhortation, dire warnings in stern language. Now he turned to encouragement, feeling certain his audience would respond to God’s call through his letter.
This third directive is so important, the remainder of the chapter rests on it. At the very end of the passage, though, the writer made some startling conclusions which we may find unsettling.
God knows life is filled with tragedy. Sin is ugly, but God is the God of beauty, and in Him you and I can overcome these things. At the end of the Bible, in Revelation, God is sitting on His throne and all around is a perfect rainbow, not half an arc, but a whole circle, heaven and earth finally made one.