What is the oldest monotheistic religion in the world?

Answer 1

Christianity

WHOSOEVER PUT THAT IS SHOULD KNOW THAT IT IS Judaism (and belief in a messiah in merely and everlasting part of)

Although many people say Islam started when Prophet Muhammad(saw) came, this is completely false. Islam was completed,( meaning no changes can be done to it and no more revelations will be sent down), after Prophet Muhammad (saw) received God's final revelations. The truth is that Islam was introduced since before Adam's creation. God created this Earth and all that is in it, therefore, the first religion would be worshiping the Creator. The Angels did exactly that. After other creations came to be, they started doing injustice to their Creator by worshiping other than God ,the exalted, himself.In Islam, the Angels are the only creatures that don't have free-will, like the humans,animals,and spirits. So, they are subjected to God's laws no matter what. All the religions that came after Islam have a chronological date because they didn't directly come from God, they were new religions. Most came from men that somehow became enlightened.Christianity and Judaism, however, came from the same God as Muslims, but were only for the people the message was brought to in a certain era. As those religions grew outward, they became contaminated and corrupted by people who were not satisfied with the original message and therefore changed to suit their own desires. The Prophets (as) who brought those messages are Prophets of Islam, so when people claim that we are not connected to that message of the Bible and the ten commandments, it is contradictory to who we are. Remember Adam and Eve(as) both reproduced all the rest of mankind. Whatever was revealed to them also came down to the rest of the Prophets who taught it to their people. Prophet Muhammad (saw), however, was sent to all people from his time to the end of time.

Answer 2

The oldest monotheistic religion (teaching that there is one God) was taught by Abraham. After Him, in order, came Moses, Jesus, Muhammad and Baha'u'llah. The teachings of Zoroaster have appeared to teach two Gods, but the aspect of good was more powerful than the other, so it too can be considered as being monotheistic. Hinduism can be seen as monotheistic for the same reason: there is the supreme God and lesser attributes. Buddha taught of the "First Cause" and what could that be other than the Creative Force of the universe - or "God."

Answer 3

Judaism

Answer 4

Judaism has the claim to this. If you want to quibble, you could say that the Samaritans also have a claim, since they claim (plausibly) to have split from Judaism around the time of the Babylonian exile or perhaps before that, around the time of the split between the kingdoms of Judah and Israel. But, because this is a split, both would have legitimate claims. However, the question said Hebrew Bible. This split was before the Hebrew Bible was completely redacted. The final decisions about which books made up the Hebrew Bible seem to have been made in the first or even as late as the second century. Arguments about books like Song of Songs and Esther survive from that era. Judaism existed long before this, and the split with Christianity was already under way at that time.