This incident completes a cycle in John"s Gospel. Jesus performed His first sign in Cana ( John 2:1), and now He returned and did another miracle there ( John 4:1-38). There is even a second reference to Capernaum ( John 2:12; John 4:46). John"s account of Jesus" first miracle in Cana ( John 2:11) ended with a reference to the weak faith of the Jews that rested only on miracles ( John 2:23-25). His account of Jesus" second miracle in Cana ( John 4:54) opens with a similar reference ( John 4:45; John 4:48). In short, this section seems to be an inclusio framed by two miracles in Cana with two conversations occurring between them. Jesus" conversation with Nicodemus is typical of the reception that the Jews gave Him, but His conversation with the Samaritan woman shows the reception that non-Jews more typically gave Him. We see these two attitudes toward Jesus not only in the Gospel accounts of His ministry but also in Acts. The center section that the structure highlights is essentially an exposition of Jesus" mission ( John 3:16-36). [source][source][source]
AJesus" first sign in Cana John 2:1-11BA reference to Capernaum, Jesus" headquarters John 2:12CHostility toward Jesus in Jerusalem John 2:13-25DNicodemus" response to Jesus John 3:1-15EThe importance of Jesus" mission John 3:16-36D"The Samaritan woman"s response to Jesus John 4:46C"Acceptance of Jesus in Samaria John 4:39-42B"A reference to Galilee, Jesus" major ministry arena John 4:43-45A"Jesus" second sign in Cana John 4:46-54[source]
This pericope ( John 4:46-54) constitutes the closing incident in John"s account of Jesus" early public ministry (chs2-4). It shows Him returning to Cana, Nathanael"s hometown ( John 21:2), where He performed another significant miracle. John evidently included it to show that Jesus" demonstration of His authority resulted in some Jews believing on Him. [source][source][source]
"Both the miracles performed at Cana ... are thus shown to have been prompted by trust. Mary trusted her Son to do something to relieve the embarrassment of their host at the wedding. The father of the sick boy was equally confident that he could rely on Jesus" help. Both miracles are also shown to have resulted in a personal surrender to Jesus which is full Christian faith. His disciples believed on him after the water had been turned into wine; the father and the rest of his household believed as the result of the healing of the boy: and in both cases the verb in the original is an inceptive aorist "they put their faith in Him"." [1][source]