Why does the Bible say the gospel is 'eternal'? Does the gospel's power transcend time and space? Yes. The Bible says God forgave sins under the Old Covenant based on what Christ would do – what he'd do in the gospel, which reached back into that Old Covenant (Romans 3:25-26). Also, in the story of an Ethiopian nobleman seeking God by reading Isaiah chapter 53, he wanted to know 'who' that chapter was about. Phillip the evangelist "began with that very passage of Scripture and told him the good news about Jesus" (Acts 8:34-35 NIV). Jesus is the "who" of Isaiah 53. The gospel about Christ is so sharply depicted in Isaiah 53 (written 750 years before Christ's birth) that it became known as the "forbidden chapter" in Jewish synagogue readings after Christ's resurrection (see https://rlsolberg.com/isaiah-53/). Listen and learn more about this eternal gospel.