The Holy Ghost is given directly by Jesus, so Jesus has to be real in us, not just a nice figment of our imagination.
Mathew 3:11 "I baptize you with water for repentance, but he who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire.
You really have to believe Him to receive Him. And when you do;
Mark 16;17 And these signs will accompany those who believe: in my name they will cast out demons; they will speak in new tongues;