Very good and in-depth post. Here is the problem the way I see it. When a Christian says God the Jewish person thinks what do they mean, are they saying that Jesus is the Father? That can 't be if he came to do the Father's will and not his own and he prayed to the Father. In the King James Bible God is a translation of Elohim. Elohim can be singular or plural. Jesus (Yahshua) is the Elohim of Israel the messiah. Elohim plural are the Sons of El. Other nations served other Elohim. Some Jews don't believe messiah has come yet. The Muslims however serve a different Elohim (Moon God). So words are very important and cause a lot of confusion, everyone does not have the same definition of the words.
You need to read Luke 16-19 thru 31. There is fire and torment. He warns us about this place, it is our decision to go there or not. If you love Jesus (Yahshua) follow his commandments and chose Heaven (life) and not Hell (death (permanent)). It is a wonderful thing to warn people what to expect either way. Search some accounts of people that have died, gone to hell and have come back.