"The love of Christ which passes knowledge."
Ephesians 3:19

(the following is by Spurgeon)

The love of Christ in its sweetness, its fullness,
its greatness, its faithfulness, passes all human
comprehension. Where shall language be found
which shall describe His matchless, His unparalleled
love towards the children of men?

It is so vast and boundless that, as the swallow
but skims the water, and dives not into its depths,
so all descriptive words but touch the surface,
while depths immeasurable lie beneath.

Well might the poet say,
"O love, you fathomless abyss!"

This love of Christ is indeed measureless
and fathomless; none can attain unto it.

Before we can have any right idea of the love
of Jesus, we must understand His previous glory
in its height of majesty, and His incarnation
upon the earth in all its depths of shame.

But who can tell us the majesty of Christ?

When He was enthroned in the highest heavens
He was very God of very God; by Him were the
heavens made, and all the hosts thereof.
His own almighty arm upheld the spheres; the
praises of cherubim and seraphim perpetually
surrounded Him; the full chorus of the hallelujahs
of the universe unceasingly flowed to the foot
of his throne: He reigned supreme above all His
creatures, God over all, blessed forever!

Who can tell His height of glory then?

And who, on the other hand, can tell how low
He descended? To be a man was something, to
be a man of sorrows was far more; to bleed,
and die, and suffer, these were much for Him
who was the Son of God. But to suffer such
unparalleled agony; to endure a death of shame
and desertion by His Father, this is a depth of
condescending love which the most inspired
mind must utterly fail to fathom.

Herein is love!

And truly it is love that "passes knowledge."

O let this love fill our hearts with
adoring gratitude, and lead us to
practical manifestations of its power.