Let me see if we can come to some understanding . since we ask if every religion is based or comes due to superstition .
Was Abraham a Jew ?
Was Abraham Isak or Jacob were religious men ?
Why did they embrace to a Deity ?
Were they believer in God
Can a believer be a religious, can a believer be nin religious
Could you help me to answer those questions
A better question to ask is: how do we know that the stories of Abraham, Isaac and Jacob are legends, not to be taken literally?
In the Creation Myth of the Bible, Abraham is met by Yahweh, who calls him by name, then renames him, then identifies him as the father of the throng of nations. This statement uses Hebrew alliteration, playing on "ab", a root for "father". It's the literary device of a storyteller, a spinner of fables. The miraculous nature of Yahweh's interaction with Abraham is another device of a spinner of legend. Other miracles, such as Abraham's survival unharmed from immolation in the Book of Jubilees or the Quranic legend that Allah sent a bolt of lightening from heaven, causing Abraham's house to appear out of thin air, are similar devices used by spinners of subsequent legends that padded the initial version with their own miraculous innovations.
Abram of the Bible supposedly led people of Ur into Canaan. This element of the story is a continuation of the Creation Myth, one that establishes the origins of the Israel ethnically and geographically. Even if it were to construed symbolically as an ancient collective memory of a migration out of Mesopotamia, there is no physical evidence to support it. The people of Canaan could just as well have originated in Syria, Arabia or Egypt.
Since the entire Creation Myth is designed around the emergence of the monotheistic Yahweh from the pantheistic Elohim, Abraham, Isaac and Jacob all have been portrayed as Patriarchs who were subjugated by Yahweh, yet they were great men in the nation of Canaanites. The story is woven to build the supremacy of Yahweh over humans, the necessity for obedience to him, and to establish the central theme - the Covenant, leading to the delivery of the Ten Commandments and Yahweh's promise of protection of his "chosen people".
Unfortunately, by the time of the Books of Maccabees, Yahweh had not delivered on his end of the bargain, having left his people to enslavement by the Persians, and having turned his back on them during the destruction of the Temple. The ultimate humiliation comes in 70 AD with the second destruction of the Temple by Nero's army. It is at this time that the Jesus Myth appears and takes root, and draws a new regional populace - the Hellenized people of the Levant - into a new version of Covenant, this time delivered in the person of the legendary Jesus.
Was Abraham a Jew? There were no Jews at the time of the legend of Abraham. Their original nationality is unknown, but they would become known as Canaanites, also known as Phoenicians.
Were Abraham, Isaac or Jacob religious men? They are religious patriarchs of Judaism. They are characters in a fable, one that takes place while Yahweh interacts with humans in miraculous ways.
Why did they embrace a Deity? This goes more to the question of why people are ever religious, what is the cause of religious ideology. The legends of Abraham, Isaac and Jacob are part of the elaborate cautionary tale of the Covenant. The legend appears as Canaanites were moving away from their ancestral deities, such as the Elohim - the gods who created the heavens and the earth - and Ashereh, the mother-creator and/or wife of Yahweh - into embracing Yahweh.
But the central reasons that people were seeking deities was superstition. Statues of Ashereh found in the homes of ancient Canaanites reveal that they were seeking fertility and protection from the mother-god, a form of superstition.
Were they believers in God? At some point they believed in Yahweh, but the date of that transition is uncertain. The worship of Ashereh continued for some substantial period after the switch from the Elohim to Yahweh.
Can a believer be religious, can a believer be non-religious? Anyone who holds a belief in supernatural forces, typically a Supreme Commander of the Universe, would either be exhibiting superstition or religion. I'm not sure that it matters too much how we draw the line. Religious believers may reserve the word "superstition" to characterize the anomalous behavior of their fellow believers - such as those who keep seeing the Virgin Mary appearing in paint chips and on steamy windows. However, we can use the words interchangeably by referring to superstition as any irrational belief. Religion is irrational, insofar as it requires us to accept irrational ideas - such as a Supreme Commander of the Universe.