What does the Bible say about envy and strife among Christians?

In 1 Corinthians 3:1-3, the Apostle Paul addresses the issue of envy and strife by rebuking the Corinthians for their carnal behavior. Paul points out that this envy and division among them is not just a personal failing but indicative of a deeper, spiritual immaturity. Despite being brethren in Christ, their actions revealed a lack of understanding of God's grace and an ignorance of the gospel. He emphasizes the need for growth in grace and knowledge of the Lord, suggesting that spiritual maturity should lead to unity rather than discord.