God, it is a death of the soul.

Deadly sin is also an unrest of the heart. Everything can rest only
in its proper place. But the natural place of the soul is God; as St
Augustine says, Lord, thou hast made us for Thyself, and our heart
is restless till it finds rest in Thee. But deadly sin separates us
from God; therefore it is an unrest of the heart. Deadly sin is also
a sickness of the faculties, when a man can never stand up alone for
the weight of his sins, nor ever resist falling into sin. Therefore
deadly sin is a sickness of the faculties. Deadly sin is also a
blindness of the sense, in that it suffers not a man to know the
shortness of the pleasures of lust, nor the length of the punishment
in hell, nor the eternity of joys in heaven. Deadly sin is also a
death of all graces; for as soon as a deadly sin takes place, a man
becomes bare of all graces. (217)

Every creature must of necessity abide in God; if we fall out of the
hands of his mercy, we fall into the hands of His justice. We must
ever abide in Him. What madness then is it to wish not to be with
Him, without whom thou canst not be! (169)

CONTENTMENT

A GREAT teacher once told a story in his preaching about a man who
for eight years besought God to show him a man who would make known
to him the way of truth. While he was in this state of anxiety there
came a voice from God and spake to him: Go in front of the church,
and there shalt thou find a man who will make known to thee the way
of truth. He went, and found a poor man whose feet were chapped and
full of dirt, and all his clothes were hardly worth