Final answer:
The sign that Jesus did when he came out of Judea in Galilee, according to John 4:54, was the healing of an official's son.
Step-by-step explanation:
The sign that Jesus did when he came out of Judea in Galilee, according to John 4:54, was the healing of an official's son.
John 4:46-54 tells the story of a royal official whose son was sick and near death. The official came to Jesus and pleaded with Him to come and heal his son. Jesus responded by saying, "Go. Your son will live." The official believed Jesus' words and went home, only to find his son completely healed at the same time Jesus had spoken those words.
This miraculous healing was a sign of Jesus' power and authority over sickness and death, demonstrating that He is the Son of God.