What does a redshift mean in cosmology

A: The cosmological argument for the existence of God states that every finite and contingent thing has a cause, but that causes can not go back in an infinite chain, so there must be a First Cause. There are many limitations and problems with this argument. The cosmological argument is no more than a poorly constructed premise that can mean what you want it to mean. The sometimes response, "Who made God?" may be simplistic, but it does highlight the question of why there is a noncontingent First Cause. An even greater problem for Christians, Muslims and Jews, is that if the cosmological argument were valid, it would equally prove the existence of Brahma, Ahura Mazda or any other creator god. For a scientist, the First Cause can quite validly be the Big Bang. Most scientists at least argue that "God" is not a scientifically proven cause The cosmological argument can even be restated so as to prove that God need not exist: Whatever begins to exist has a cause. The Universe began to exist. Therefore, the Universe had a cause.