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Moses discussed it in Genesis 1.

Newton recognized that his theory of gravitation presented problems with the then-conventional view that the universe had always existed. If the universe was infinitely old, then stars should have been attracted to each other and would have merged into a single body. He discussed the issues about a single creation event vs a gradual one, the latter eventually re-introducing those same problems.

Stephen Hawkings stated the following :
The debate about whether, and how, the universe began, has been going on throughout recorded history. Basically, there were two schools of thought. Many early traditions, and the Jewish, Christian and Islamic religions, held that the universe was created in the fairly recent past. For instance, Bishop Usher calculated a date of four thousand and four BC, for the creation of the universe, by adding up the ages of people in the Old Testament. One fact that was used to support the idea of a recent origin, was that the Human race is obviously evolving in culture and technology. We remember who first performed that deed, or developed this technique. Thus, the argument runs, we can not have been around all that long. Otherwise, we would have already progressed more than we have. In fact, the biblical date for the creation, is not that far off the date of the end of the last Ice Age, which is when modern humans seem first to have appeared.

The idea that the universe had a specific time of origin has been philosophically resisted by some very distinguished scientists. We could begin with Arthur Eddington, who experimentally confirmed Einstein's general theory of relativity in 1919. He stated a dozen years later: "Philosophically, the notion of a beginning to the present order is repugnant to me and I should like to find a genuine loophole." He later said, "We must allow evolution an infinite amount of time to get started."

So the concept of a Big Bang has been around about as long as humanity. The term, however, is a little less than a hundred years old.

So the concept of a Big Bang has been around about as long as humanity.

No; what you've just shown is the notion of the Universe having a finite age has been around for a long time, not that the Big Bang Cosmology's advocates have had "over a hundred years" to explain it. None of the ideas you presented, from Moses to Newton, are capable of making specific predictions of the observed characteristics of the Universe, as has been done by the BB Cosmology.

The term, however, is a little less than a hundred years old.

Once again, you are incorrect. Hoyle, father of the Steady-State Cosmology, coined the term "Big Bang" in the 1950's as a disparagement of the alternative Cosmology.

The point being that until the early 1960's relatively few Cosmologists subscribed to the Big Bang Cosmology; most were Steady Staters. It was only after Penzias and Wilson discovered the predicted CMBR that the BB Cosmology received wide-spread acceptance. Most of the scrutiny of BB Cosmology has occurred since that time, roughly 40 years, far less time than the advocates of Relativity and Quantum Mechanics have had to defend their theories.