How do you picture the Holy Spirit?Our imagination is likely to run to something like a vague fuzzy cloud. Or perhaps we think of an invisible, impersonal force. No wonder the Holy Spirit is often called "it." While Christians affirm that the Spirit is the third person of the Trinity, we struggle to think of him as a person at all.The Bible is clear that the Holy Spirit is a person. But how can human beings understand who he is? Scripture helps...