Why do Christians know so little about the Holy Spirit?

It’s a question that I myself don’t have an answer for, I simply know that the question refers to me just as much as the next guy. In J.I. Packer’s “Knowing God“, he discusses the fact that so many Christians, even those who are not very serious about their relationship with God, can easily give an explanation of the work of Christ, who He is, what He did on the cross, and what that means for people, but cannot nearly as simply give a description of the past, present, and future work of the Holy Spirit. Sadly, I have found this to be true in my own life. The work of the Holy Spirit is vital, and believers would do well understand it better. Packer describes two parts to the importance of the third part of the Triune God-Head, and I plan on discussing them both in future posts.