The following pages represent the gist of a series of sermons given on successive Sunday evenings to the congregation of the church of which I am pastor. The talks were taken down stenographically and later reduced to their present length. A fifth message which was a part of the series has been omitted here. The fact that these were originally spoken messages accounts for their racy style and for the personal references which occur in them occasionally. Had I been writing the messages I should have exercised greater care in the composition. The subject is, however, so vitally important that I feel sure the reader will pardon the offhand style of the language. The truth is always good even when the vehicle in which it rides is homely and plain. This book is made available to the Christian public with the prayer that it may help to lead many thirsty believers to the fountain of living waters. — A.W.T.