The unpardonable, or unforgivable, sin has been spoken and preached about by many believers, but many do not have a clear grasp of it and are unable to accurately explain what defines this sin. This confusion on the unpardonable sin stems from an unclear understanding of what it truly means and its implications for our eternal life. In Explaining "The Unpardonable Sin" by William L. Wagner, the unpardonable sin is examined to illustrate exactly what it means, which is blaspheming against the Lord, in a number of different contexts. By creating shared and solid beliefs, the piece ensures that both the readers and the author are on the same page from the start so that they can all come to the same conclusion-an agreed, deep comprehension of the unpardonable sin. While Matthew 12:13, "...blasphemy against the Holy Ghost shall not be forgiven unto men," sprouts the foundation for the belief that this is the unpardonable sin, William makes it clear that the Word of God emphasizes the fact that all can be forgiven. He explores the New Testament, highlighting the words of Jesus and the gospels to show readers that they do not have to fear; there is no unpardonable sin in the eyes of God, and all have the chance to be saved. William L. Wagner resides in a rural area of central Missouri with his wife. He has worked in manual labor all his life and is now retired. Although he is not a preacher or pastor, his Southern Baptist beliefs call him to share the truth of Jesus Christ with as many people as possible. He hopes that this book offers guidance for readers who are wondering if they are eligible to be saved.