An officer asks Christ to heal his son in this artwork by by J. Tissot. The moment of this image is the response of Jesus, from John 4:48-50
"Jesus therefore said to him: Unless you see signs and wonders, you believe not. The ruler saith to him: Lord, come down before that my son die. Jesus saith to him: Go thy way; thy son liveth. The man believed the word which Jesus said to him, and went his way."