I've just finished reading this book on Ephesians 3:18-19. It was originally published as "The Saints' Knowledge of Christ's Love", but the folks at Banner have reprinted it under a snappier, more Wesleyan title. There are some really heart-warming bits, as well as some quite dry bits. Bunyan is so good at psychological application! Here are some highlights:
O the length of the saving arm of God! As yet thou art within reach thereof; do not thou go about to measure arms with God, as some good men are apt to do: I mean, do not thou conclude that because thou canst not reach God by thy short stump, therefore he cannot reach thee with thy long arm... It becomes thee, when thou canst not perceive that God is within reach of thy arm, then to believe that thou art within the reach of his; for it is long, and none knows how long.
Were all the saints on earth, and all the saints in heaven to contribute all that they know of this love of Christ, and to put it into one sum of knowledge, they would greatly come short of knowing the utmost of this love...
know they self, what a vile, horrible, abominable sinner thou art. For thou canst not know the love of Christ before thou knowest the badness of thy nature... He that sees most of what an abonimable wretch he is, he is like to see most of what is the love of Christ... So then, if a man would be sure and steadfast, let him labour before all things to see his own wretchedness.
Why then do not Christians devote themsevles to the meditation of this so heavenly, so goodly, so sweet, and so comfortable a thing, which yieldeth such advantage to the soul? The reason is, these things are talked of, but not believed: did men believe what they say, when they speak so largely of the love of God, and the love of Jesus Christ, they would, they could not but meditate upon it.