There are many different interpretations of the same info, thus in reality there are two faiths in the world: paganism and the true faith. The world shows indisputably what the real faith is through the massive attempt to hide, distort AND mimick the contents of the bible, which is why HALF of the population of the world worship a biblical, abrahamic based theology. This in itself is a fulfilled prophecy that should not be ignored.
The answer is that the three Abrahamic religions are all distortions of the truth, so adhering to the bible will appear like a merger of all three. Ancient Hebrews dressed like modern muslims, except with fringes and tzit tzits. Ancient Hebrews also worshipped all day and were devoted like muslims, except not devoted to Muhammads laws, but to Moses' (which are two thousand years older and where Muhammad received his laws from). Even the word allah is a Hebrew word which means 'to lift up or exault' and is a shortened form of Alahim (which most know as Elohim).
The Hebrews followed the commandments that jews of today follow, including Sabbath worship and the feast days, except the jews of today perverted the language and added a bunch of extra feasts. They even changed the Name from yahuah to Yahweh in order to dilute true worship.
Christians believe in the Messiah, but reject the law of Masha/Moses and call on a paganized version of the real Messiah, Yahusha.
In the first century there were a massive group of believers that if they were seen today would appear to be muslim/christian/jews, who were black, dressed in traditional garments and kept Hebrew law and high days. This is what the Messiah preached and what was adhered to until they were all massacred, by the Roman empire(who later perverted this faith into what we now know as Christianity). This is the truth and then it was called Natzarim, which means follower of the Branch, who is the Messiah Yahusha.
It is the devil who divides truth into thousands of options, each containing just enough of the truth to make the bigger lie believable. The fact that there is a wide variety of religions, with a single common thread, is proof that the biblical model is correct in all aspects.