The man departed, and told the Jews that it was Jesus, who had made him whole.
All Commentaries on John 5:15 Go To John 5
Cyril of Alexandria
AD 444
He makes Jesus known to the Jews, not that they by daring to do anything against Him should be found to be blasphemers, but in order that, if they too should be willing to be healed by Him, they might know the wondrous Physician. For observe how this was his aim. For he does not come like one of the faultfinders, and say that it was Jesus Who had bidden him walk on the Sabbath day, but Which had made him whole. But this was the part of one doing nought save only making known his Physician.
