Arguments For The Existence Of God
Quote from the article: The Ultimate Question of Origins: God and the Beginning of the Universe By William Lane Craig*
“We can summarize our argument as follows:
1. Whatever exists has a reason for its existence, either in the necessity of its own nature or in an external ground.
2. Whatever begins to exist is not necessary in its existence.
3. If the universe has an external ground of its existence, then there exists a Personal Creator of the universe, who, sans the universe, is timeless, spaceless, beginningless, changeless, necessary, uncaused, and enormously powerful.
4. The universe began to exist.
From (2) and (4) it follows that
5. Therefore, the universe is not necessary in its existence.
From (1) and (5) it follows further that
6. Therefore, the universe has an external ground of its existence.
From (3) and (6) it we can conclude that
7. Therefore, there exists a Personal Creator of the universe, who, sans the universe, is timeless, spaceless, beginningless, changeless, necessary, uncaused, and enormously powerful.
And this, as Thomas Aquinas laconically remarked, is what everybody means by God”. (Theologiae 1a.2.3.)