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Arguments for God: Theological Arguments for the Existence of God

There are a wide variety of arguments used by theists in their claims that their god exists. Here you will can read critiques of such arguments, including arguments from design, cosmology, morality, Pascal's Wager and more.
God as Designer: Does God's Mind Evince Signs of Design?
People who argue that the universe is designed face numerous problems and contradictions in their arguments. One of the most interesting is that if everything with a useful purpose is necessarily designed, then isn't the same true of the mind of the alleged designer?
Do Moral Absolutes Require a God?
A favorite argument of some Christians is to insist that disbelief in gods is unreasonable because the existence of morality proves that their god must necessarily exist. Of all the arguments in defense of theism, this is one of the worst because it invariably leads to circular arguments, logical fallacies, and unsupportable claims.
Order & Chance: Does the World Require a Designer?
The most common argument offered on behalf of the idea that our orderly world needs a designer is that such order could not possibly have arisen naturally, without direction. Why do people believe this? Not on the basis of empirical evidence, but because they are very poor judges of whether and how likely events are to occur by chance.
God as Explanation for Order: What Explains God's Orderly Mind?
Many Christians insist that order in the universe requires the existence and intervention of their god as an explanation. There's just one problem: if order can't exist without the action of their god, then why is their god's mind orderly?
Causes and Physical Laws: God Can't Be Used as a Cause of the Universe
Theists often insist that the universe needs an explanation and science can't provide one; therefore, their god is necessary and must be believed in. Such theists miss something, however: causal explanations are functions of natural laws which are themselves products of the universe. Therefore, they can't be used to explain the universe. Perhaps there is no 'cause' of the universe.
Arguing for Gods: Overview of Various Arguments for Gods
There is a limited number of arguments offered for the existence of gods, although there are certainly variations and ways to make old arguments look new. For that reason, it is a good idea to familiarize yourself with the most common - this will make it easier to deal with them when you encounter them.
Cosmological Arguments
The Cosmological Argument covers a lot of ground and takes a number of different forms. The most common deal with two ideas: that the existence of the universe requires a god as an explanation (First Cause - this form is also called the Etiological Argument) or that order in the universe requires a god as an explanation.
Teleology and Design Arguments
Often this is called the Argument from Design because one is arguing from the existence of design and to the conclusion that the design requires God to explain. Instead, what is required is an argument to design - the person attempting to prove a god must first give just cause why anyone should believe that something called "design" can be discerned in the natural world.
Ontological Argument
Ontological Argument: The Ontological Argument for the existence of God is one of the oldest arguments in Christian theology. It is also one of the most difficult to understand because it relies purely upon logical considerations and not at all upon empirical evidence.
Argument from Religious Experience
The Argument from Religious Experience is that many people have what they label as religious experiences - experiences of the supernatural, like heaven or angels or even a god. Because we believe the experiential claims which people generally make - like that they went to the store or that they own a car - then we should be willing to believe these claims as well.
Argument from Mysticism
An important form of the Argument from Religious Experience focuses on the issue of mysticism - it might be called the Argument from Professional Religious Experience. What is claimed is that, throughout time, in various cultures and places, there have existed particular individuals who have somehow had direct, personal experiences with God.
Argument from Intuition & Instinct
Sometimes people can argue that anyone who is truly religious simply "knows" that their god really does exist. Logical proofs and empirical evidence simply aren't necessary to validate this belief. The believer "feels" the presence of his or her god and "intuition" is cited as a valid source of this knowledge.
Argument from Miracles
The Argument from Miracles is based first and foremost on the premise that there exist events which must be explained by supernatural causes, i.e. God. Probably every religion has had miracle claims and so the promotion and apologetics for every religion has included references to allegedly miraculous events.
Arguments from Morals and Values
Separate but connected, the arguments from morals and values make up what are known as the Axiological Arguments (axios = value). According to the Argument from Values the existence of universal human values and ideals means that there must be a God who created them. The Argument from Morals asserts that morality can only be explained by the existence of a God who created us.
Argument from Justice
This Argument from Justice starts from the premise that in this world virtuous people are not always happy and do not always get what they deserve while wicked people do not always get the punishments they should. The balance of justice must be achieved somewhere and at some time, and since this does not occur here it must occur after we die.
Pascal's Wager
Someone who offers Pascal's Wager is arguing that to believe in God is a better bet than not believing in God. If you believe and God exists, you’ll go to heaven and avoid hell; if you believe and are wrong, you lose nothing. If you don’t believe in God and God does exist, you’ll lose heaven and go to hell; if you’re right, then you gain nothing. There are a lot of problems with this argument.
Argument from Reward
Some apologists argue that people who believe in a god are happier than those who do not believe in any gods. They suggest that this extra happiness is a reward from their god and, hence, the god they believe in must exist. It isn't too hard to see why this argument isn't offered by more sophisticated apologists and professional theologians.
Argument from Scriptures
Some popular apologists argue that their particular holy books qualify as evidence supporting their claims that their god(s) exist. One method might be to point to the supernatural events recorded in these books as requiring the existence of a god. Or they might point to how influential the scriptures have been, arguing that this would not have been possible without the help of a god.
Argument from Common Consent
This argument was once used by theologians and philosophers, but has fallen out of favor among those who know what they are talking about. The reason, as it shall be seen, is that this is not simply an flawed argument but can also be a logical fallacy.
Argument from Consciousness
According to this argument, neither naturalism nor materialism can give an adequate explanation of mental events like consciousness. Consequently, divine and supernatural explanations are needed to explain why we are conscious and how our brains work.

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