Judaism Start with Judaism, since it came first and established roots that carried into the other two.Jewish tradition teaches that there is one and only one God, creator of everything, and He established physical and moral laws.
Still, Pope Francis offered his "home" - the Vatican - as the perfect place to plea for some divine assistance, and Israeli President Shimon Peres and Palestinian Authority President Mahmoud Abbas dutifully agreed to attend.”) Tradition holds that there’s a World To Come after death where moral accounts will somehow be settled. Christianity The most obvious differences in the Christian God are the traditional teachings about the Trinity and Jesus. According to Christian tradition, God begets a son who is somehow also Him but not Him to atone for Original Sin.He sacrifices that son though a brutal death and thus achieves humanity's salvation. And that sacrifice redeems eternally all who accept and believe in it.Finally, for this God, much of the Jewish scriptures (which are all God’s word) are actually about foreshadowing Jesus. Islam The Muslim God is a bit more like the Jewish God. Jesus was a prophet, but no more divine than other prophets.God has never has had anything like physical attributes and has no gender.