Having traversed from being raised vaguely christian, through atheism, back to a form of what I suppose could be called pantheism, I see the truth of the statement but find it difficult to explain without also explaining a mountain of pre-requisites, if only to negotiate terminology for concepts you may already be aware of, so that the actual answer can be conveyed. Never the less, I will make an attempt at simplified statement of it:
God must necessarily exist because you, the thing that sits behind your eyes and experiences the world, exist.
If you feel that this is a naive statement, as you likely do, then it is because we lack sufficient shared context attached to the words. However, I am confident that if you spend enough time thinking about the nature of the world, and of yourself, you will come to the same conclusion, though you may use different words to describe it.
God must necessarily exist because you, the thing that sits behind your eyes and experiences the world, exist.
If you feel that this is a naive statement, as you likely do, then it is because we lack sufficient shared context attached to the words. However, I am confident that if you spend enough time thinking about the nature of the world, and of yourself, you will come to the same conclusion, though you may use different words to describe it.