"It
is seldom that any of our bad habits or flaws disappear by a mere process of
natural extinction. At least it is very
seldom that this is done through the instrumentality of reasoning, or by the
force of mental determination. But what
cannot be destroyed may be dispossessed.
And one taste may be made to give way to another and to lose it’s power
entirely as the reigning affection of the mind.
The boy, who ceases at length to be a slave of his appetite, does so because
a more mature taste has brought it into subordination. (So for example) The young man may cease to
idolize sensual pleasures but it is because the idol of wealth has gotten
ascendancy so the love of money can cast out the love of sloth, however even the
love of money can cease to have mastery over the heart if it is drawn into the
world of ideology and politics and he is now lorded over by a love of power and
moral superiority. But there is not one of these transformations in which the
heart is left without an object. The
hearts desire for an ultimate object may be conquered, but its desire to have some
object is unconquerable. The only way to
dispossess the heart of an old affection is through the expulsive power of a
new one. It is therefore only when
admitted into the number of God’s children through faith in Jesus Christ, that
the spirit of adoption is poured out on us… it is then that the heart brought
under the mastery of one great predominant and supreme affection is delivered
from the tyranny of all it’s former desires and the only way deliverance is
possible."
Thomas Chalmers
From his sermon "The Expulsive Power of a New Affection."
Came across this in a sermon by Tim Keller.