
Monotheism can be defined as belief in a single God. There are many monotheistic religious beliefs. There are many monotheistic religions, including Islam, Judaism and Zoroastrianism. Each has its own set of beliefs and practices. Let's look at the differences among them.
Islam
Islam is a monotheistic religion, which emphasizes God’s oneness. Islam believes that God is the Creator alone and that worship should be given to Him. This idea is reinforced throughout the Qur'an. Most verses in Qur'an stress the Oneness and Oneness of Allah.
Christianity, Judaism, Islam are the major monotheistic religions. Abraham is the father of these three traditions. Abraham, the father in Abrahamic religions and the founder of these traditions, was asked to give up his only son. God intervened to save him. He offered Abraham a ram for sacrifice. The promise of the Messiah is the center of Jewish hope in the Bible.

According to Islam, worship is a very important part of Islam. Worship is more than mere rituals and prayers. All of us must engage in acts of worship that please God. These activities may include charitable donations or seeking knowledge.
Judaism
Judaism belongs to the Abrahamic group of religions and is monotheistic. Its roots can be traced back to the Bronze Age in the Middle East. It is based on Jewish beliefs and history. It is one of the most popular religions in the world and has been for more than two thousand years.
Jewish people believe God created everything, and all humans were created in God's image. Judaism is a belief that God will judge all of us at the end. It has many rules, traditions, and holidays and is different from other religions. Currently, there are 5,000,000 Jews in the United States. There are thousands of synagogues throughout the country. Jewish people believe in helping people and making the world more beautiful.
The Torah portrays polytheism to be a wicked religion. In Deuteronomy 32:16-17, God accuses the Israelites of worshiping false gods. Modern scholarship suggests polytheism has its roots within monotheism, which is a far more complex question than many believe.

Zoroastrianism
Zoroastrianism has a deep impact on the worldviews its followers, even though it is one of most obscure religions. The teachings of Zoroastrianism include the doctrines of hell, heaven, the Judgment Year, and freewill. It also teaches angels and demonic existence.
Zoroastrians believe that human souls can reach perfection during the current life and then go on to meditate on their deeds in the next life. A balanced set of actions leads to happiness, and a negative one leads to destruction. Zoroastrianism encourages people towards being good and moral beings.
Zoroastrianism can be considered the oldest and most ancient religion in the world. Its adherents were a wealthy minority who believed honesty, respect, education, and justice. Eventually, they fled to India, where they are known today as the Parsis.