Why is the purity of the gospel important for Christians?

Maintaining the purity of the gospel is essential for Christians as it directly affects their understanding and experience of salvation. In Galatians 1, Paul emphasizes that adding anything to the finished work of Christ distorts the gospel, turning good news into bad news. The gospel must remain focused on Christ as the sole source of righteousness and redemption. If any works or human efforts are added, it leads believers away from the sufficiency of Christ's sacrifice, undermining their assurance and peace with God. Moreover, preserving the integrity of the gospel safeguards the church against false doctrines that seek to pervert the truth, ensuring that believers can confidently proclaim the message of grace to the world.