Story of Samuel - (1 Samuel ch. 3)
'Speak, Lord, for your servant is listening.'
Here is what I want to point out.
-God was speaking to Samuel in this story.
-Samuel knew he was being addressed.
-He did not know it was God.
He actually had to learn how to recognize God was speaking to him.
In other words: it is possible for God to speak to someone and for that person to know something is going on, but they don't know it's God.