John Calvin on John 4:45

45. The Galileans received him. Whether or not this honor was of long duration we have not the means of determining; for there is nothing to which men are more prone than forgetfulness of the gifts of God. Nor does John relate this with any other design than to inform us that Christ performed miracles in presence of many witnesses, so that the report of them was spread far and wide. Again, this points out one advantage of miracles, that they prepare the way for doctrine; for they cause reverence to be paid to Christ.

John 4:46-54

46. Jesus therefore came again into Cana of Galilee, where he had turned the water into wine. And there was a certain courtier, whose son was diseased, in Capernaum. 47. When he heard that Jesus had come from Judea into Galilee, he went away to him, and entreated him to go down and cure his son; for he was near death. 48. Jesus therefore said to him, Unless you see signs and wonders, you will not believe. 49. The courtier himself said to him, Sir, come down ere my child die. 50. Jesus said to him, Go, thy son liveth. The man believed the word which Jesus had spoken to him, and went away. 51. And while he was still going down, his servants met and informed him, saying, Thy son liveth. 52. Then he asked them at what hour he recovered; and they said to him, Yesterday at the seventh hour the fever left him. 53. The father therefore knew that it was the same hour at which Jesus had said to him, Thy son liveth. And he believed, and all his house. 54. This second miracle did Jesus again, when he had come out of Judea into Galilee.