
Monotheism can be defined as a belief system that believes there is only one God. Monotheists practice the Christian faith, but consider the deity 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 that one who does not practice monotheism is not protected by God.
Religions that believe only in one deity
Monotheism is a belief that there is one god and is the foundation of all world religions. It differs from polytheism and atheism, which each attribute responsibility for reality to a separate god. Monotheistic religions are those that believe God is all-knowing. They are also non-anthropomorphic.
Dualistic religions refer to the fact that the universe is divided into two basic principles: matter and spirit. This is a variation of monotheism and is found in some gnostic systems. These religions, which are often based on esoteric knowledge, are sometimes considered heretical and unorthodox Christians. The demiurge may be called a demonic being.

Many of these religions have sacred scriptures that guide them in their daily lives. Most prominent among them are the Christian Bible, the Hebrew Scriptures, and the Islamic Qu'ran. Some religions believe these texts were written by a deity while others believe they were written by humans. Waaqeffanna in Oromo is the name of the single god. It means "the word".
Religions which are quasi-monotheistic
Although there are some similarities between quasi-monotheist religions and true monotheisms, there are also differences. True monotheism emphasizes that there is only one god, and that all the others are illusions. Quasimonotheism is focused on the Creator's importance in all aspects of human existence.
The idea of monotheism, and its application to religion, has its roots in the early modern era. Henry Moore coined the term in 1660 to distinguish between Christian and Deistic anthropomorphic conceptions. Later, the term "monotheism," was used in conjunction with "polytheism", another concept that was created in the first century CE.
The monotheistic religions of ancient Greeks or Romans had a supreme god. Zeus was the symbol of the transition from polytheism and monotheism. Zeus worship also reduced respect for lesser gods.

Monotheistic religions
Religions that are monotheistic believe in only one god, whereas religions that believe in many 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 began to emphasize the concept of a single god.
Monotheistic religions are those that believe only in one God. They reject all other beliefs and systems. As such, they have been very aggressive in the past, often justifying their actions by claiming that their religion is the only one that is true. They have used monotheism in many cases to justify their actions, which is contrary to the religion's message.
Ancient cultures often worshiped several gods, but the concept of a single god was not unusual. Some ancient civilizations elevated one god above all others.