50 “Go,” Jesus replied, “your son will live.”The man took Jesus at his word and departed.

Read John 4:50 Using Other Translations

Jesus saith unto him,Go thy way; thy son liveth. And the man believed the word that Jesus had spoken unto him, and he went his way.
Jesus said to him, "Go; your son will live." The man believed the word that Jesus spoke to him and went on his way.
Then Jesus told him, “Go back home. Your son will live!” And the man believed what Jesus said and started home.