Because, although they knew God, they did not glorify Him as God, nor were thankful but became futile in their thoughts and their foolish hearts were darkened.Rom 1:21
They represented their gods with images accordingly. For reinstate: the gods of healing, the gods of fruitfulness, the god of the sun, the god of the rain, the god of harvest, e.t.c they also believed there is a god that lives in heaven. This mentality of interpreting God in different way was in them. They also called on the gods who led and directed their forefathers, all these they held strictly in order not to deviate from the gods that protected, guided and delivered them from evil people and spirits: so blinded,they were led astray by the worship of gods made by human hands. Our forefathers were ignorant of whom they were, the knowledge of their real life were far away from their understanding and so they were led astray which resulted to so many problems, curses, misfortune in the life of many people today, because of their fetish act of worship in the past. They became like what they worshiped and marveled at undefined things that happened around them. They were confused and perish in their lack of knowledge.
How can you explain this?When a seed is sown on a fertile soil and was well watered, it brings forth a plant, more than what is planted is produced as food for human consumption, this is supreme science of the great God and it’s beyond human understanding, who can explain what actually took place over the night at the time of growth? How the seed was able to get rotten and bring out good seed for food. To our ancestors, the gods of harvest did that, and to show appreciation, they made images of what they think of the god of harvest, sacrifices of ram, chicken e.t.c. are being offered to those gods. These and many others they have done in order to appreciate and worship God but were done in a wrong way. This is what they taught of God, but never taught of the kind of life that was given to them, the power, glory, Excellency in creativity and other wonderful values that were packaged in them at the time of creation. They completely lived in ignorance, fulfilling what the scripture said in (Matt 13:14-15) .And in them the prophecy of Isaiah is fulfilled, which says “hearing you will hear and shall not understand. And seeing you will see and not perceive; for the heart of this people have grown dull; their ears are hard of hearing. And their eyes they have closed, lest they should see with their eyes and hear with their ears, lest they should understand with their hearts and turn, so that I should heal them.
They never knew of their real life that brings fulfillment.
But how could they believe on whom they have not heard of, they hold onto traditions and customs that was strictly passed unto them, thereby incurring curses and anger of God,because of their fetish act of installing and initiation of idols, many were chained and enslaved under the oath and covenants made to a particular idol, endangering the progress and success of their future generations. Many have died and others are still suffering of the mistakes made by the ancestors. The worship of any form of image as god is an abomination to God the almighty.
You shall not make for yourself a carved image__ and likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth;
You shall not bow down to them nor serve them for I the lord your God am a jealous God, visiting the iniquity of the fathers upon the children to the third and fourth generations of those who hate me.