Why must God exist?
There are only 2 basic options for the origin of the universe .... an uncaused, supernatural first cause of the universe OR an uncaused, natural first cause of the universe. If you categorically reject the former (as atheists do), you have no option but to accept the latter by default. It is an intellectually dishonest cop-out to say atheism is merely a lack of belief.
Atheists cannot simply deny and attack the concept of a supernatural first cause without justifying the only alternative. That is not intellectually credible or rational.
We know that the universe has not always existed, we know it had a beginning and it is 'running down' from an original peak of energy potential at its beginning. The Second Law of Thermodynamics (law of entropy) confirms that. So we know the universe had an origin.
What about matter itself?
Can matter have always existed? The simple answer is no.
Matter/energy and all natural entities and events are contingent, they rely on causes for everything. Because they are contingent they cannot be eternally self-existent or necessary entities. They do not contain within themselves the reason or cause of their own existence. As contingent entities, they are entirely reliant on that which causes and maintains them. They cannot exist or operate in any way without causes, Thus they must have had an original cause at some stage, even if the chain of causes and effects is very long, it had to have a beginning at some point.
A basic principle of the scientific method is that we can expect to find an adequate cause for every natural occurrence. All scientific research is based on that premise.
To propose a non-contingent, natural occurrence or entity as the originator of the universe (as atheists are forced to do), is unscientific fantasy.
A supernatural first cause (God) is not a contingent entity. It is not natural, and is not bound by natural laws which govern matter and all natural events. In fact, as the first cause of matter/energy, it is also the author of the laws that govern matter/energy. It cannot be subject to laws it has created.
As the very first cause, it also cannot have had any preceding cause, so we know it cannot be a contingent entity.
Why? Because ...first means first, not second or third. If something is first, nothing preceded it. It must have always existed and must have had within itself the means of its own existence. It could not have relied on anything else for its existence. So the supernatural, first cause (a creator God) has to be eternally, self-existent and necessary.
It also has to have the powers and ability to create everything else that exists in the universe. As the original cause, it has to be an adequate cause of everything ...of all causes and effects that follow it, forever. That means - it has to have the powers, properties and qualities sufficient to create: time, matter/energy, natural laws, information, life, intelligence, consciousness and every characteristic that humans have. Because we, as a mere effect of the first cause, cannot be greater than that which ultimately caused us.
So God is the non-contingent, self-existent, necessary, supernatural,
first cause of everything in the universe.
That is the logical conclusion of the understanding and application of natural laws.
ATHEIST BELIEF IN A NATURAL FIRST CAUSE VIOLATES NATURAL LAW.
THUS ATHEISM IS ILLOGICAL, AND ANTI-SCIENCE.
Essential characteristics of the first cause.
Consider this short chain of causes and effects:
A causes B, - B causes C, - C causes D, - D causes E.
'A, B, C & D' are all causes and may all look similar, but they are not, there is an enormous and crucial difference between them.
Causes B, C & D are fundamentally different from cause A.
Because A is the very first cause and thus had no previous cause. It exists without a cause. It doesn’t rely on anything else for its existence, it is completely independent of causes - while B, C & D would not exist without A. They are entirely dependent on A.
Causes; B, C & D are also effects, whereas A is not an effect, only a cause.
So we can say that the first cause ‘A’ is both self-existent and necessary. It is necessary because the rest of the chain of causes and effects could not exist without it. We also have to say that the subsequent causes and effects B, C, D and E are all contingent. That is; they are not self-existent they all depend entirely on other causes to exist.
We can also say that A is eternally self-existent, i.e. it has always existed, it had no beginning. Why? Because if A came into being at some point, there must have been something other than itself that brought it into being … which would mean A was not the first cause (A could not create A) … the something that brought A into being would be the first cause. In which case, A would be contingent and no different from B, C, D & E.
We can also say that A is adequate to produce all the properties of B, C, D & E.
Well in the case of E we can see that it relies entirely on D for its existence, E can in no way be superior to D because D had to contain within it everything necessary to produce E. The same applies to D it cannot be superior to C, but furthermore neither E or D can be superior to C, because both rely on C for their existence, and C had to contain everything necessary to produce D & E.
Likewise with B, which is responsible for the existence of C, D & E.
As they all depend on A for their existence and all their properties, abilities and potentials, none can be superior to A whether singly or combined. A had to contain everything necessary to produce B, C, D & E including all their properties, abilities and potentials.
Thus we deduce that; nothing in the universe can be superior in any way to the very first cause of the universe, because the whole universe, and all material things that exist, depend entirely on the abilities and properties of the first cause to produce them.
So to sum up … a first cause must be uncaused, must have always existed and cannot be in any way inferior to all subsequent causes and effects. In other words, the first cause of the universe must be eternally, self-existent and omnipotent (greater than everything that exists). No natural entity can have those attributes, that is why a Supernatural, Creator God MUST exist.
What about polytheism, can there be more than one God or Creator.
It is patently obvious there can only be one supernatural first cause.
The first cause is infinite - and logically, there cannot be more than one infinite entity.
If there were two infinite entities, for example, A and B. The qualities and perfections that are the property of B would be a limitation on the qualities and perfections of A. and vice versa, so neither would be infinite.
If A & B had identical qualities and perfections they would not be two different entities, they would be identical and therefore the same entity, i.e. a single, infinite, first cause. So there can be only one infinite being or entity, only one supernatural, first cause and creator of the universe.
So when atheists keep repeating the claim - that there is no reason to believe the monotheistic, Christian God is any different from the multiple, gods of pagan religions, it simply displays their ignorance and lack of reasoning.
"I believe that the more thoroughly science is studied, the further does it take us from anything comparable to atheism"
"If you study science deep enough and long enough, it will force you to believe in God"
Lord William Kelvin.
Noted for his theoretical work on thermodynamics, the concept of absolute zero and the Kelvin temperature scale.
The Law of Cause and Effect is a fundamental principle of the
scientific method. Science literally means 'knowledge'. Knowledge
about the natural world is gained through seeking adequate causes for
every natural occurrence. An uncaused, natural ocurrence, is a
completely, unscientific notion.
Concerning the Law of Cause and Effect, one of the world's greatest scientists, Dr. Albert Einstein wrote: “All natural science is based on the hypothesis of the complete causal connection of all events”
Albert Einstein. The Collected Papers of Albert Einstein, Hebrew University and Princeton University Press p.183
FOUNDATIONS OF SCIENCE
The Law of Cause and Effect. Dominant Principle of Classical Physics. David L. Bergman and Glen C. Collins
"The Big Bang's Failed Predictions and Failures to Predict:
(Updated Aug 3, 2017.) As documented below, trust in the big bang's
predictive ability has been misplaced when compared to the actual
astronomical observations that were made, in large part, in hopes of
affirming the theory."