Because of the 2nd Law of Thermodynamics, we know that the universe is slowly running out of usable energy. If the universe were infinitely old, then it would have ALREADY run out of light and heat, etc. The fact that this is NOT the case points to the fact that the universe is NOT infinitely old. Therefore, it had a beginning.
If the universe had a beginning, then why? What caused it? These arguments can be viewed this way:
Kalam Cosmological Argument
youtube.com/watch?v=6CulBuMCLg0
- Whatever begins to exist has a cause.
- The universe began to exist.
- Therefore, the universe has a cause.
Leibniz’s Contingency Argument
youtube.com/watch?v=FPCzEP0oD7I
- Everything that exists has an explanation for its existence either in the necessity of its existence or in an external cause.
- If the universe has an explanation for its existence, then that explanation is God.
- The universe exists.
- Therefore, God is the explanation for the existence of the universe.
Kreeft’s Contingency Argument
strangenotions.com/the-contingency-argument-for-god/
- If something exists, there must exist what it takes for that thing to exist.
- The universe—the collection of beings in space and time—exists.
- Therefore, there must exist what it takes for the universe to exist.
- What it takes for the universe to exist cannot exist within the universe or be bounded by space and time.
- Therefore, what it takes for the universe to exist must transcend both space and time.
Teleological (Fine-Tuning) Argument
youtube.com/watch?v=UpIiIaC4kRA
- The universe appears to be finely-tuned to support life.
- The fine-tuning of the universe is due either to necessity, chance, or design.
- The fine-tuning of the universe is not due to necessity.
- The fine-tuning of the universe is not due to chance.
- Therefore, the fine-tuning of the universe is due to a designer.
CONCLUSION
It’s reasonable to say that whatever begins to exist must have a cause. For example, a bar of chocolate does not simply exist on its own or bring itself into existence. The cause of its existence is a candy maker. This principle of causation holds regardless of how big or small the thing in question may be – whether it is a candy bar, a house, a planet or the entire universe. And if the universe began to exist, then the universe had a cause.
Further, if something exists, there must also exist that which is necessary for that thing to exist. So, if the universe – that is, the sum of all physical matter, space, and time – exists, there must also exist whatever is necessary for the universe to exist. But, that which is necessary cannot be part of the universe, exist within it or be bounded by space and time because nothing that is within the universe can bring itself into existence. In other words, whatever is necessary for the universe to exist must be outside the universe and transcend both space and time. So, if the universe began to exist, it must have had a cause which is outside the universe itself and which transcends both space and time.
Going further still, the apparent fine-tuning of the universe which was necessary for the existence of life suggests the existence of an intelligent designer.
This intelligent designer which exists outside the universe and beyond space and time is what we call “God”.