The word of God is filled with examples of faith; but it is in Hebrews 11 where faith is particularly defined. Faith is invisible material that can be discerned and is tangible only in the spiritual realm. This invisible material is the "substance" that Hebrews talks about. Therefore, investigating the essence of what this key word means is the tool to unearthing a better understanding of what faith is and how it operates. This is what this book will do for you by looking at what the scriptures say concerning this word. It also has a commentary of the whole chapter of Hebrew 11 which explains many aspects of faith in each and ever verse. The information in this book will equip you with enough knowledge to discern whether or not you are walking by faith or by sight.