According to Catholic scholars, what does John 5:6 tell of the "fully human" nature of Jesus?

We read in John 5:2-6 (KJV): > Now there is in Jerusalem near the Sheep Gate a pool, which in Aramaic is called Bethesda and which is surrounded by five covered colonnades. Here a great number of disabled people used to lie—the blind, the lame, the paralyzed. One who was there had been an invalid for thirty-eight years. When Jesus saw him lying there and **learned** that he had been in this condition for a long time, he asked him, “Do you want to get well?” Even before approaching the pool, Jesus would have known that the paralytic person had been lying there for 38 years. But the Evangelist writes that Jesus "learned" of it, that is, either he asked the onlookers, or was told by the man himself of his plight. But in the given form, John 5:6 suggests that Jesus continued to top up his knowledge in the capacity of a human being. My question therefore is: According to Catholic scholars, what does John 5:6 tell of the "fully human" nature of Jesus ?