In this work, Dr. Herbert Lockyer examines virtually every biblical reference to the Holy Spirit. He explores the Holy Spirit as part of the Trinity and the Holy Spirit in relationship to the believer. As part of the divine Trinity, the Holy Spirit is one with the Father and the Son and yet has a unique personality and function. "He who is the breath of God" also has a special relationship to the believer; He enables the believer to live a Spirit-filled life evidenced by the fruit and fullness of the Spirit. Lockyer writes, "A deficient study of the third Person of the Trinity has resulted in dryness of spiritual experience". This book offers a solution. Lockyer's careful study is coupled with a warm pastoral approach, making this book food for the mind and heart.