John Bunyan, author of The Pilgrim’s Progress, wrote many books, including The Saint’s Knowledge of Christ’s Love, or, The Unsearchable Riches of Christ. It has also been published recently under the title, All Loves Excelling. The entire book is a forrest fire of goodness sparked by Ephesians 3:18-19.
[May he grant you] strength to comprehend with all the saints what is the breadth and length and height and depth, and to know the love of Christ that surpasses knowledge, that you may be filled with all the fullness of God.
In Greek, one article (precedes and) welds all four dimensions together in verse 18. Paul wasn’t thinking about four things, but the immensity, the vastness, the incalculability of one thing. But what is that something? I believe the one thing is Christ’s love, explicitly named in verse 19..
Breadth refers to area. Christ’s love covers the widest span. Length refers to distance, how far things are apart. Christ’s love reaches the farthest intervals. Depth refers to the bottom. Christ’s love descends to the lowest levels. It is unfathomable. Height refers to the top. Christ’s love soars at the summit.
His love is too large to frame, and even if it were, there isn’t a wall large enough to hold the frame. Imagine the most oversized, mega-gargantuan container you have at home; now double-it; now multiply by the next number higher than you can conceive. You’ve just taken a mathematical baby step toward comprehending Christ’s incalculable love.
I love Bunyan’s question:
Couldst thou (sinner) if thou hadst been allowed, thyself express what thou wouldst have expressed, the greatness of the love thou wantest, with words that could have suited thee better?—Bunyan, The Saint’s Knowledge of Christ’s Love, 37
In other words, if someone asked you to describe the kind of love you hoped for, could you have imagined it this good? His love fills us, and the bread and cup remind us of His body spent in loving sacrifice for us.