Written in the 1800s, this book is still up to date and is easy to understand. Any Christian can use the truths that are found in it and anyone seeking or questioning their relationship with God will find direction and peace. Dwight L. Moody writes, ""If a man is not willing to do the will of God he will knot know the doctrine. If a man is willing to turn from sin and take the light and thank Him for what He does give, and not expect to have light on the whole Bible all at once, he will get more light by day by day and slowly progress and be led right out of darkness into the clear light of heaven."