What was the only Jesus those people singing the walking-on-water song actually knew?
The only Jesus they knew was the Jesus of earthly ministry—the One walking on water in their song. They knew nothing of the Christ of Calvary, nothing of the shed blood, and nothing of the power of His resurrection. The passage likens them to much of Christendom, familiar with Jesus, Christmas, and Easter but not the cross’s power.
Les explains that the people singing the favorite song “here comes Jesus walking on the water” only knew the Jesus of earthly ministry. They knew nothing of the Christ of Calvary, nothing of the shed blood, and nothing of the power of His resurrection. He adds that they are not alone: this is most of Christendom, which knows all about Jesus, Christmas, and Easter, but has long forgotten the power of the work of the cross. By contrast, Paul preached Christ crucified—God’s power to those who are saved, but foolishness to the lost—and warned that if people come preaching another Jesus or another gospel, one might bear with them. Les connects this to Paul’s defense of his apostleship, where Paul says he was not a wit behind the very chiefest apostles, namely Peter.