This is one of the best succinct explanations that I have seen.
It is from this blog DJ Allyn – The Soundtrack for my Life
The following is an accurate Description of the three Abrahamic Religions:
There are three major religions in this world — Judaism, Christianity, and Islam. All of them worshiping the same God — the God of Abraham.
Each has their own religious book that outlines their story, their history, and rules to live by.
Think of each of them like a movie. The Torah is the first one, and the New Testament is the sequel. Then the Qu’ran comes out, and it reconstructs the last one like it never happened. there is still Jesus, but he is not the main character any more, and the messiah hasn’t shown up yet.
Jews like the first movie but ignore the sequels, (Matrix Trilogy) Christians think you need to watch the first two but the third movie doesn’t count. (The Godfather Trilogy) Muslims think the third one was the best (The Starwar prequels), and Mormons like the second one so much that they started writing fan fiction that doesn’t fit with ANY of the series canon.
Of course, the author of this seems to have forgotten Hinduism and Buddhism which are also major world religions, but they do come from a different movie studio.
Buddhism is not a religion. It is an understanding of a reality witnessed by each individual from within. Its has no belief system.