Lucas 23:8-9

Luke had previously mentioned Herod’s interest in seeing Jesus (Luke 9:9). He clarified here that his interest in Jesus was only as a miracle worker. He had no interest in talking with Him about spiritual matters. It was evidently about His miracles that Herod questioned Jesus. Jesus did not respond because Herod had rejected the implication of His miracles, namely, that Jesus had come from God with a message for humankind. Herod had made his feelings toward prophets clear by decapitating John the Baptist. Jesus had nothing to say to someone such as this.

"Jesus’ exousia [authority] also manifests itself in the political realm. This is most evident in Luke, which alone of the gospels records two rebuffs of Herod Antipas, Jesus’ political sovereign in Galilee (Luke 13:31-32; Luke 23:6-12)." [Note: James R. Edwards, "The Authority of Jesus in the Gospel of Mark," Journal of the Evangelical Theological Society 37:2 (June 1994):217-33]