Excellence in the Gifts of the Holy Spirit is very thorough on the subject.

The majority of books on the subject of The Gifts of the Holy Spirit dwell almost entirely on 1 Cor. 12.

However, this book also covers 1 Cor. 13 and 1 Cor. 14, in depth.

The author's treatment of 1 Cor. 14, answers many questions regarding "tongues" that have been prevalent in the church  world for many decades.

There are those who have rejected the Gifts of the Holy Spirit out of ignorance. This book will eradicate that lack of knowledge.