Why should Christians declare the gospel?

The declaration of the gospel is an obligation set forth by the Great Commission, where Jesus commands His disciples to 'go into all the world and preach the gospel' (Mark 16:15). By proclaiming the gospel, Christians fulfill their role as witnesses to the transformative power of Christ's work and His resurrection. This message is not just a call to believe, but a sharing of the good news that offers hope, forgiveness, and reconciliation with God to a world that is lost in sin. Additionally, the act of declaring the gospel strengthens the faith of other believers, as Paul instructs in Romans 10:17 that 'faith comes from hearing, and hearing through the word of Christ.' Thus, the evangelistic effort is crucial for expanding the kingdom and bringing glory to God.