“ 'Blessed are those who mourn.'What can it mean?One can understand
why Jesus hails those who hunger and thirst for righteousness,
why he hails the merciful,
why he hails the pure in heart,
why he hails the peacemakers,
why he hails those who endure under persecution.
These are qualities of character which belong to the life of the kingdom.But why does he hail the mourners of the world? Why cheer tears?
It must be that mourning is also a quality of character that belongs to the life of his realm. Who then are the mourners? The mourners are those who have caught a glimpse of God’s new day, who ache with all their being for that day’s coming, and who break out into tears when confronted with its absence.
…The mourners are aching visionaries."
from Nicholas Wolterstorff’s Lament for a Son: