Would love to know who it was. The first human to utter the word "God". The first human to attribute a miracle to "God". The first human that had an inkling that there was an invisible force for good in the universe.
https://www.youtube.com/watch?v=f-wWBGo6a2w

Five Minutes with God

, “I always thought when I got older that God would sort of come into my life someway, he didn't I don't blame him if I was him I'd have the same opinion about me that he does”.

Where Is God - Is God In Your Life

Where Is God Introduction

The arguments for and against God.
https://en.wikipedia.org/wiki/List_of_proto-languages
https://en.wikipedia.org/wiki/Christopher_Hitchens

Where Is God and How Do You Know

Where did TRUTH come from. Was it the night sky.
https://en.wikipedia.org/wiki/List_of_proto-languages

Where Is God - Truth

Keep looking up. 
"You will know the truth and the truth will set you free"

Where Is God - The Truth

What you focus on grows in your life. Choose wisely.

Where Is God - The Truth

BroncoDave