…the Bible speaks of the Holy Spirit performing tasks that only persons can perform. The Spirit comforts, guides, and teaches the elect (see John 16). These activities are done in a manner that involves intelligence, will, feeling, and power. He searches, selects, reveals, comforts, convicts, and admonishes. Only a person could do these things. The response of the Christian, then, is not mere affirmation that such a being exists, but rather to obey, love, and adore the Holy Spirit, the Third Person of the Trinity. (R. C. Sproul, Essential Truths of the Christian Faith)