Judaism, Christanity, and Islam are the three monotheistic religions.
Similarities are:
1. They all come from Abraham and his sons Ismael an Isaac.
2. they all share the old testament
3. they all believe in god
4. believe in the afterlife
5. all have a holy book
Differences are:
1. Christians believe that Jesus was divine, son of god
2. Islam says that Jesus was only a prophet
3. jews do not believe that Jesus was a prophet or in any holy way