A royal official went to Cana when he heard that Jesus was there and begged Jesus to heal his son, who was dying in Capernaum. Jesus miraculously healed the son, from a distance, and told the man that his son would live.
This was only the second miracle that Jesus had performed during his public ministry, as noted in the Gospel of John. This miracle had a transformative effect on the family of the healed son and they came to believe in Jesus.
The towns of Cana and Capernaum are in the region of Galilee, in northern Israel, and are perhaps a day's worth of travel apart.
This event is described in the Gospel of John:
49 The nobleman said to him, "Sir, come down before my child dies." 50 Jesus said to him, "Go your way. Your son lives." The man believed the word that Jesus spoke to him, and he went his way. 51 As he was now going down, his servants met him and reported, saying "Your child lives!" 52 So he inquired of them the hour when he began to get better. They said therefore to him, "Yesterday at the seventh hour, the fever left him." 53 So the father knew that it was at that hour in which Jesus said to him, "Your son lives." He believed, as did his whole house. 54 This is again the second sign that Jesus did, having come out of Judea into Galilee.
- John 4:46-54, WEB translation.
The towns of Cana and Capernaum are in the region of Galilee, within the Biblical land of Israel.
Next: Miracles of Jesus: Healing of a man possessed by a demon in Capernaum