This Jesus lacks depth. Sisto's wimpy voice doesn't sound capable of commanding attention of a room, let alone a throng of people outdoors. Mysteriously, Jesus seldom prays. Only at the beginning and the end do we see him entreating the Father's help. Healings are done casually, when the Gospels often show Jesus praying before healing.
Teaching is even more casual.
Jesus' Jewishness is practically forgotten after the first Temple visit, where he actually wears a prayer shawl. Nonetheless, Sisto's acting is decent, but casting might have been better. This is one of the few movies where younger plays older, instead of the other way around. Otherwise, acting is mediocre. Sets are disasters.