We read in, John 4:39-54 NIV
39 Many of the Samaritans from that town believed in him because of the woman’s testimony, “He told me everything I ever did.” 40 So when the Samaritans came to him, they urged him to stay with them, and he stayed two days. 41 And because of his words many more became believers.
42 They said to the woman, “We no longer believe just because of what you said; now we have heard for ourselves, and we know that this man really is the Savior of the world.”
43 After the two days he left for Galilee. 44 (Now Jesus himself had pointed out that a prophet has no honor in his own country.) 45 When he arrived in Galilee, the Galileans welcomed him. They had seen all that he had done in Jerusalem at the Passover Feast, for they also had been there.
46 Once more he visited Cana in Galilee, where he had turned the water into wine. And there was a certain royal official whose son lay sick at Capernaum. 47 When this man heard that Jesus had arrived in Galilee from Judea, he went to him and begged him to come and heal his son, who was close to death.
48 “Unless you people see miraculous signs and wonders,” Jesus told him, “you will never believe.”
49 The royal official said, “Sir, come down before my child dies.”
50 Jesus replied, “You may go. Your son will live.”
The man took Jesus at his word and departed. 51 While he was still on the way, his servants met him with the news that his boy was living. 52 When he inquired as to the time when his son got better, they said to him, “The fever left him yesterday at the seventh hour.”
53 Then the father realized that this was the exact time at which Jesus had said to him, “Your son will live.” So he and all his household believed.
54 This was the second miraculous sign that Jesus performed, having come from Judea to Galilee.
“Τοῦτο πάλιν δεύτερον σημεῖον ἐποίησεν ὁ Ἰησοῦς ἐλθὼν ἐκ τῆς Ἰουδαίας εἰς τὴν Γαλιλαίαν.”
Τοῦτο(this) πάλιν(again) δεύτερον(second) σημεῖον(sign) ἐποίησεν(did) ὁ(the) Ἰησοῦς(Jesus) - This is again the second sign(miracle) Jesus did;
What was the first sign that Jesus did in Cana? He changed water to wine for wedding at Cana sometime ago.
Why did He do that? Jesus revealed His Glory as the Son of God so that the disciples would believe in Him.
This, the first of His miraculous signs, Jesus performed at Cana in Galilee. He thus revealed His glory, and His disciples put their faith in Him.
Literally, Jesus did it again as a second sign. Other miracles had been performed by the Lord between these two; but John emphasizes these two as marking Jesus’ coming from Judea to Galilee.
The healing of the nobleman’s son was the second miracle when He again came to Galilee, and this miracle was the second, as marking His second coming to Galilee.
What do we see between these two signs that our Lord performed at Cana?
(1) The first sign, Changing Water to Wine was to show His Glory as the Son of God. By this first miraculous sign it is well represented that the first coming of the Son of God was to show the world that Jesus came as the Son of man but in essence He was the Eternal Son of God who can change water to wine, as having power as the Creator of the universe.
(2) The second sign, Raising the Nobleman’s son was to show His Power as the Lord of Life Who will come πάλιν(again) δεύτερον(second) and give us eternal life by raising those who have fallen asleep in Christ Jesus.
Paul testifies to this truth in 1 Corinthians 15:51-52;
“Listen, I tell you a mystery: We will not all sleep, but we will all be changed— in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed.”
Verse 53 says;
“Therefore, my dear brothers, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord, because you know that your labor in the Lord is not in vain.”