The Media:

In the beginning was the Word, and the Word was with God, and the Word was God. John 1:1

Words are used to communicate facts. We talk to each other with words. We give directions with words- make a left around the corner to the end of the block and it'll be the third car to your right. Diagrams may help too. However, when we get to truths and emotions, words suddenly fall short to describe these things.
This is where mythology comes in- why stories are used. You best communicate truths through stories. You don't explain what love is with words, but with a story.

Now, we come to describing God, and we're at a loss. Words would not do. Diagrams or images would not do. Stories would not fully encompass who He is. That is why He sent Jesus, the primary communicator of His Being. A human cannot be dissected. An autobiography filled with thousands of words is never full or complete. This is why people are the best way for God to communicate who He is.

Scriptures are important; Yet, the primary way God communicates is through a human being. His life is a representation of Him. A person who's met Jesus is the most effective media through which one can know God. I don't think one can truly know God unless one has met someone who has met Jesus.

This is why we bear witness to who Christ is. We show others who He is through our lives. Simply telling someone to read the Bible would only get them so far. They need to meet someone who knows Jesus.

The Proof:

How do you know that God exists?
All the logical arguments for the existence of God immediately rushed through my head- the argument from change, from efficient causality, from degrees of perfection, the ontological argument, the design argument, the moral argument. I finally gathered my thoughts, finding the perfect one that was most easy to understand, answer the question, and win a soul over to Christ. I was about to open my mouth, before he said, "because I have met Him."

One can know something is true through logic or through experience.