Why is the Gospel central to Christian faith?

The Apostle Paul emphasizes the Gospel as the heart of Christian faith throughout his letters, notably reminding the believers in Colossians 2:5 that their steadfastness must be anchored in Christ. The Gospel reveals the full redemption that believers have through Christ's sacrifice, ensuring that their faith is not built on human efforts or traditions but solely on the grace of God. This understanding establishes a firm foundation for Christians, as they rely on the efficacy of Christ's atonement and the continual work of the Holy Spirit in their lives.