
The worship of one supreme god is referred to as henotheism. Friedrich Schelling and Friedrich Welcker first coined the term to describe ancient Greek monotheism. A person who practices henotheism is not denying the existence of lower gods.
Hinduism
Hinduism is a monotheistic religion in which people believe in a supreme soul that resides in every creature. The highest goal of a Hindu is to attain "moksha" (saved state). Moksha means that an individual is free from the cycle of rebirth and can be considered an absolute soul. Hindus also believe strongly in the idea of karma. This belief holds that one's spiritual ramifications can be balanced cyclically.
Hinduism is a monotheistic religion. However, it's often mistakenly viewed as a pluralistic religion. Although Hindus may believe in other gods, they don't worship these. They see their gods as personifications of a unifying force. Hindus believe Jesus is a manifestation these gods.

Hinduism is the third most popular religion in the world, with the majority of its adherents living in India. It is unique among Abrahamic religions in the fact that it has no identified founder or central religious authority. However, it does recognize other gods and believes in the afterlife.
Greco-Roman religion
Ancient Greece was home to both the Romans and Greeks who worshiped gods daily and celebrated major life cycles with rituals. These ancient cultures believed in a number of gods, each with different powers. While the Greek gods believed there was a balance between law and nature in Greek mythology, the Roman gods had a focus on raw power. They also included foreign gods to their pantheon.
Greek philosophy stressed logic and reasoned questions. It was one among the earliest attempts to explain rationally the origin and nature the universe. The Milesian School was a precursor to Greek Philosophy. They sought an underlying factor that formed all matter. The Stoic school later added political, ethical, and social theories on top of the previously developed philosophy. This philosophy was the basis of Western philosophy.
Henotheism marries the idea and belief in the unity of God with that of God existing in multiple forms. Although the gods can take many forms, they all share the same firstness. This is the central tenet in henotheism. Henotheism was a tradition in early Christianity and paganism. However, it began to decline over the next 20 years.

Assyrian religion
In the Neo-Assyrian Empire, Assyrian Henotheistic religious traditions developed. Assur was the Assyrian supreme god, and his role in Assur's cosmology was considered ideal. Assur's philosophy was informed by Marduk and Ellil, which Assyrian philosophers also incorporated. Asshur was the Assyrian Supreme God and determined humanity's destiny in the distant future. He was also the most awe-inspiring figure.
The Assyrians ruled over a region that included modern-day Turkey and northern Mesopotamia. The reign of Ashurbanipal (ca. 1750 BC and started to crumble. Ashurbanipal's death led to more regions of the empire breaking away. In 612 BCE, the Assyrians were defeated by an alliance of nations. The Kassites ruled the region for more than 500 years.
The myths of these ancient civilizations were the result of a democratic pantheon. The gods dealt with the issues of the universe but ultimately one supreme god emerged. Babylon's Marduk, the local god, rose to the position of god in Babylonian mythology. As a result, his attributes and powers were enhanced.