Jesus is God's Son
Either Jesus was a fictional character or he took far too much credit for being the eyes of God. Mysticism places more value in the unseen than seen. It becomes a problem when one (authors of scripture) claims to be the spokesperson of a higher power that really doesn't require the assistance of its creation(s). It would seem God, The Almighty, can emit the message clearly to its people at any time. That thought either cannot or rarely is ever challenged in biblical circles. Because, to them, "God works in many ways" but the one direct example of just appearing in front of us all on the doorstep. Again this appears to be another creation debate, but in fact I'm suggesting that "God's Plan" is simply a hands-off approach in which humanity is to figure out life's obstacles for themselves. Many of these ideas were self-generated by religious icons who took empowerment too seriously.
If God is forgiving and loving, then a belief in Hell is contradictory. It establishes once again that God is vengeful and therefore no better than humanity. For God created humanity with a free will to decide the path they so choose. Not to punish them when God had the choice and power to create a same-face collective.
The belief in such implies that an entity consumes people whole. However, to believe that people get their evilness from a Devil is to imply they are not responsible for their actions. For example, if a criminal commits a crime, it is deemed the evil spirit caused the problem because they consumed their soul. In effect modern jurisprudence doesn't need to exist for individuals are not responsible for their own conclusions.