The document discusses brotherly affection and its importance for church membership. It notes that Romans 12:10 commands believers to show family affection and honor one another. Several examples of how believers should treat one another are provided, such as accepting, encouraging, forgiving and praying for one another. The document argues that brotherly affection is important because it shows our new nature in Christ, strengthens faith, displays God's glory, and attracts others to God. It concludes by advising believers to preach to themselves that other imperfect believers are God's children, look for evidence of grace in their lives, and remember they too were once alienated from God.