What is something to say to a person who does not believe in God?

Answer 1

Nothing, unless they are open to discussion.

There are tens of proofs for God's existence. These have been recorded for centuries and are easy to look up. However, this subject ultimately becomes one of personal belief, since our possession of free-will mandates that it be possible to put forth arguments (fallacious or not) against every one of the proofs.
Here are a few.
1) Teleological Argument: The universe has definite design, order, and arrangement which cannot be sufficiently explained outside a theistic worldview. (This is how Abraham, without benefit of teachers, came to reject the chaotic world-view of idolatry and the possibility of Atheism). For example, theoretical physicist and popular science writer Paul Davies (whose early writings were not especially sympathetic to theism) states concerning the fundamental structure of the universe, "the impression of design is overwhelming" (Davies, 1988, p. 203).From the complexities of the human eye to the order and arrangement of cosmology, the voice of God is heard. God's existence is the best explanation for such design. God is the designer.Is there evidence against Evolution

God's wisdom seen in His creations

More about God's wisdom

2) Anthropic Principle: The laws of the universe seem to have been set in such a way that stars, planets and life can exist. Many constants of nature appear to be finely tuned for this, and the odds against this happening by chance are astronomical. Professor Russel Stannard (a particle physicist) states: "The universe has been bent over backwards in order that intelligent life should exist...must have known we were coming."

3) Sensus divinitatus: The innate sense of the divine exists within all people. People and cultures of all time have, by instinct, sensed a need to believe in and worship something greater than themselves. No ancient society ever existed that did not believe in a supernatural power.

4) Tradition: There are historical events which cannot be explained without God. Many people have had personal experiences that turn them toward theism, but there are also historical events such as the Giving of the Torah to over two million people at Mount Sinai, which are underpinnings for the belief in God.

5) Pascal's Wager: Belief in God is the most rational choice due to the consequences of being wrong. If one were to believe in God and be wrong, there would be no consequences. However, if one were to deny God and be wrong, the consequences are eternally tragic. Therefore, the most rational choice is not agnosticism or atheism, but belief in God.

6) Logic. Why is there reality rather than nothing? Aside from God's creating it, there are only five options:
a) The universe is eternal and everything has always existed.
- Even atheists have abandoned this possibility, especially because it would violate the Second Law of Thermodynamics.

b) Nothing exists and all is an illusion. There is no reality; there is only nothing.
- This possibility, it should be obvious, is completely self-defeating. In order to even make such a proposition, the subject has to exist in some sense. If all is an illusion, where did the illusion come from? Even the solipsist, who does not believe in the existence of other minds, has to explain the genesis of his own mind.

c) The universe created itself. This is the idea that the universe and all that is in it did not have its origin in something outside itself, but from within.
- Like with the previous two, this makes a logical absurdity. It would be like creating a square triangle. It's impossible. A triangle by definition cannot be square. So creation cannot create itself as it would have to pre-date itself in order to create.

d) Chance created the universe. The odds of winning the lottery are not very good; but given eons of time, everyone will win. While the odds of the universe spontaneously appearing are not minuscule, could it happen, given enough time?

- This option is a dishonest sleight of hand that, like "survival of the fittest," amounts to nothing, because it implies that "chance" itself has quantitative causal power.
The word "chance" refers to possibilities. It does not have the power to cause those possibilities. It is nonsense to speak of chance being an agent of creation, since chance is not a force. "What are the real chances of the universe being created by chance? Impossible. Chance is incapable of creating a single molecule, let alone an entire universe. Why not? Chance is no thing. It is not an entity. It has no being, no power, no force. It can effect nothing because it has no causal power within it. It is a word which describes mathematical possibilities which, by the curious flip of the fallacy of ambiguity, slips into the discussion as if it were a real entity with real power, the power of creativity." (R.C. Sproul, Not a Chance. Grand Rapids, MI: Baker, 1999.)

e) The universe is created by nothing. Simply put, nothing created the universe.
- The problem here is that it is either a repetition of option "a" (the universe is eternal) or fails due to the irrationality of "d." In our current universe, the law of cause and effect cannot be denied by sane people. While we often don't know what the cause of some effect is, this does not mean that there was no cause. When we go to the doctor looking for an explanation for the cause of our neck pain, we don't accept the answer "There is no cause. It came from nothing."

Answer 2

One thing to say to a person who does not believe in God is "Congratulations."

Of course, the purpose of the question may be to elicit an answer that will convince the atheist to once again believe in God. That is not easy, because the atheist may ask for proof.

Answer 3

A friendly "hello" would probably work....