Many Biblical passages refer to the process of man using his imagination to try to escape from the truth of the Creator God and judgment. Paganism is based upon religious ideals and myths from the evil imaginations of men. The religions of the world, from Baal worship, to Hinduism, to the principles of Buddha, to modern day blind faith in evolution, are simply the products of the imagination of men in rebellion against God. In their desperation to find excuses for the behavior that makes them feel guilty, men will put their faith in the most incredible ideas. If you ask questions you are told about millions of intermediate stages, billion of years, possible mutations, and changing atmospheric conditions.
Grace be with thee.
The Founders of our country understood that they were creating a nation based upon the truth of a Creator God. Even the most casual reading of the Declaration of Independence makes that clear. The culture that stemmed from this new nation was based upon truth of the Creator God. There were always individuals who followed the process of rebellion described in Romans 1, but they were always on the fringe of society. Since the 1960's, rebellion against the truth of the Creator God has been more organized, has involved more people, and it has pushed itself into the mainstream of American society.