
Monotheism, a belief system where there is one God, is monotheism. Monotheists follow the Christian religion, and consider the deity to only be one. They believe God has come to be with the human race three times: as a father; as the Lord Jesus Christ; and as the Holy Spirit. Monotheists believe one cannot enjoy God's protection if they don't practice monotheism.
Religions that believe in a single deity
Monotheism, which holds that there is only one god, is the basis of many world religions. It differs from polytheism and atheism, which each attribute responsibility for reality to a separate god. Monotheistic religions emphasize the belief in God's all-knowing and all powerful nature. They are usually non-anthropomorphic.
Some religions are dualistic, which means that the universe is split into two basic principles: spirit and matter. This is a variation of monotheism and is found in some gnostic systems. These religions are based in esoteric knowledge. Orthodox Christians may consider them heretical. The demiurge can be described as a demonic entity.

Many of these religions have sacred texts that guide their lives. The Christian Bible, Hebrew Scriptures, as well as the Islamic Qu'ran, are three of the most important. Some religions believe that these texts were written directly by a deity, while others say they came from humans. Waaqeffanna in Oromo is the name of the single god. It means "the word".
Religions that are quasi-monotheistic
Religions that are quasi-monotheists have some similarities to true monotheism, but there are differences. True monotheism emphasizes that there is only one god, and that all the others are illusions. Quasimonotheism stresses the importance and value of the creator in all aspects.
The idea of monotheism, and its application to religion, has its roots in the early modern era. Henry Moore created the term monotheism in 1660 in order to distinguish between Christian, anthropomorphic and Deistic conceptions of God. The term "monotheism" was later paired with the term "polytheism", a concept that originated in the first century CE.
Ancient Greeks and Romans believed in one supreme god and had monotheistic religions. Zeus' worship signaled the change from polytheism toward monotheism. Also, the veneration and reverence for Zeus diminished the respect for the lesser gods.

Monotheistic religions
Monotheistic religions believe only in one god. Religions that believe multiple gods are called polytheistic. Monotheism first emerged in the Old Testament Hebrew Bible. Other gods were referred to as "false deities". Later Christianity and Judaism started to emphasize the concept that there was only one God.
Monotheistic religions are those that believe only in one God. They reject all other beliefs and systems. As such, they are often aggressive and justify their actions with the claim that their religion alone is true. In many instances, they have also used monotheism as a means to justify the behavior of other people, which is incompatible with the message of the religion.
While ancient cultures may have worshiped many gods, the idea that one god was common in ancient cultures is not unusual. In fact, some ancient civilizations even elevated a single god above all other gods.