How do we know the truth of the gospel is real?

The reality of the gospel is substantiated through various means, primarily the fulfillment of Old Testament prophecies as illustrated by Jesus reading from Isaiah in Luke 4:17-21. He proclaimed that these Scriptures found their ultimate fulfillment in Him, showing that the message of salvation is not merely theoretical but rooted in historical and prophetic truth. Additionally, the transformative power of the gospel in the lives of believers serves as a testament to its authenticity—those who trust in Christ experience spiritual renewal, healing, and freedom as promised in the Scriptures. This ongoing work of God in the hearts of His people confirms the gospel's truth throughout generations.