What does the Bible say about murmuring and disputing among Christians?

The Bible emphasizes the importance of maintaining unity among believers, as seen in Philippians 2:14, where Paul instructs to do all things without murmurings and disputings. This teaching reflects the constant call for Christians to strive for harmony and peace within the church, echoing passages like 1 Corinthians 1:10, which urges believers to be perfectly joined together in the same mind and judgment. Murmuring and disputing are not merely social nuisances; they can become destructive elements that hinder worship and testimony before the world.