But you believe not, because ye are not of my sheep

"John 10:25- 27  Jesus answered them, I told you and you believed nor; the works that I do in my father’s name, they bear witness of me. But you believe not, because ye are not of my sheep, as I said unto you. My sheep hear my voice and I know them, they follow me." 

We are the ones who make the choice to follow. If we follow him, we hear his voice and we cry unto him. He hears us just as we know his voice, he knows ours. He knows us because we follow him.