There is a practice in the modern church, even those that claim to use the King James Bile. That practice is to use Holy Ghost and Holy Spirit interchangeably. This ought not to be and this is why.
I have just completed reading Goforth of China by Roaslind Goforth. This is the second edition published March, 1938 and it was given to me by one of my children. I have read other books about Jonathan Goforth, but this book has made a deep impression on me.
And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost: Luke 1:41 The babe, John, leaped for joy at Mary’s voice. Mary, the mother of his saviour! Here we see the Holy Spirit at work in a child, not yet born. What a precious miracle. Have you ever wondered how often the Holy Spirit moves in the lives of unborn children? What a question to ponder! Elisabeth was also filled with the Holy Spirit. Read on in verses 42 through 46 of Luke Chapter 1. She testifies as to who Mary is and to what her yet unborn child has done. Elisabeth tells Mary that “the babe leaped in my womb for joy.” The Holy Spirit also blesses Mary for believing the Lord. How different than what Elisabeth’s husband Zacharias did. Have joy and believe! The Christ Child is here. The Holy Spirit can give you this.