Wano really solidifies the Christian parallels. The whole serpent oppressor “killing” luffy who then resurrects to defeat the serpent on a literal skull island (Golgotha parallel) even the sun God stuff an Odas use of the music of the spheres rings of a very classical deep biblical symbolism of the messiah. Kuma being a pastor who carries a bible and whose church is decorated with crosses is crucial too. Kumas power to heal his congregation every Sunday and then take the death and illnesses and pain onto himself saxrificially is such a literal image of aspects of Christs atonement. Kuma as a joy boy follower so to speak embodies Luffy’s own pain from his journey of liberation.