Why is maintaining doctrinal purity essential for Christians?

Maintaining doctrinal purity is foundational to the Church's mission. When believers stray from the apostolic teachings, they introduce confusion and division among the body of Christ. The apostle Paul emphasized the need to contend earnestly for the faith (Jude 1:3), indicating that a vibrant defense of sound doctrine is vital for healthy fellowship. Furthermore, engaging in controversy over scriptural truths helps clarify beliefs and strengthens the community in faith. Hence, while love and humility are crucial, they should never overshadow the necessity of guarding the truth.