What does the Bible say about brotherly love among Christians?

Brotherly love is a significant theme in the New Testament, reflecting the unity that Christ desires among His followers. In Philippians 2:3-4, Paul urges the saints to avoid strife and vain glory, encouraging them to esteem others better than themselves. This kind of sacrificial love is not merely an emotion; rather, it embodies a commitment to the welfare of others in Christ, aligning with Christ's own example of humility and service. Furthermore, in Romans 12:10, believers are instructed to love one another with brotherly affection, indicating that such love is both a vital sign of true faith and a command of God for His children.