There are two classes of tongues. Both are gifts that cannot be obtained by merit but by grace. The first is primarily given to every believer for a good devotional life. It is like a self-developmental software installed in your spirit by the Holy Spirit for your personal improvement. The second type of tongues is not for all believers because it is placed with the fivefold leadership ministry which God has set in the Church. It is a ministry of tongues that works alongside the gift of the interpretation of tongues, during a public worship. This book will show you the benefits and operation of tongues. You will learn how to unleash the power of the Holy Spirit!