The Spirit of Prophecy, as manifested in the writings of God's messenger Ellen White, is far from silent upon the topic of the Godhead. Frequently, in plain, unequivocal language, Ellen White addresses the ministry of the Holy Spirit in His work for the salvation of the members of the human race. Her writings are perfectly consistent with the revelation of Holy Scripture.
Sister White addresses the issue that the Holy Spirit is a power in the universe yet not an impersonal force for good. In the plainest human language, she declares the Holy Spirit to be a personal being, the third person of the Godhead.
However, Sister White goes far beyond the issue of the person of the Holy Spirit. She gives many insights int the diverse, important roles of the Holy Spirit for the salvation of the inhabitants of this world. The reader of this book will understand more fully why the Bible declares, "Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come." John 16:13