At John 1:30-31 (NRSVCE) we see John the Baptist introducing Jesus to the crowd:
"This is he of whom I said, ‘After me comes a man who ranks ahead of me because he was before me.’ I myself did not know him; but I came baptizing with water for this reason, that he might be revealed to Israel."
John's mother Elizabeth was a relative of Mary, mother of Jesus (Lk 1:36) . As such, both John and Jesus would have known each other from childhood. Apparently, John's saying "I myself did not know him.."has a deeper meaning. My question therefore, is: How does the Catholic Church explain the statement of John the Baptist that he did not know Jesus ?