The third person of the Trinity, the Holy Spirit, is equal to the Father and the Son, yet he is often overlooked and misunderstood. In this helpful introduction, theologian Fred Sanders clears the confusion by highlighting the Holy Spirit's place in the Trinity. He focuses on the Spirit's relation to the Father and the Son, and then on his work in the lives of believers. Written for pastors, students, and laypeople, this addition to the Short Studies in Systematic Theology series underscores the essential role the Holy Spirit plays in salvation history.