How do we know the gospel has power?

The power of the gospel is evident in its ability to change hearts and lives, as illustrated in 1 Thessalonians 1:5. The Apostle Paul affirms that the gospel did not come merely in words but in power and in the Holy Spirit. This transformative power shows that while the message is preached, it is the work of the Holy Spirit that brings true understanding and assurance to the believer. This means that the effectiveness of the gospel lies not in human eloquence but in divine intervention, giving those who hear the message a new life and a desire to follow Christ.