Through his simple sanctity, long hours of hearing confessions, and forthright preaching, St. John Vianney was used by God to transform the lives of those under his pastoral care. Here is an excerpt from one of his sermons on "The Lukewarm Soul."
A lukewarm soul is not yet quite dead in the eyes of God because the faith, the hope, and the charity which are its spiritual life are not altogether extinct. But it is a faith without zeal, a hope without resolution, a charity without ardour....
Nothing touches this soul: it hears the word of God, yes, that is true; but often it just bores it. Its possessor hears it with difficulty, more or less by habit, like someone who thinks that he knows enough about it and does enough of what he should.
Any prayers which are a bit long are distasteful to him. This soul is so full of whatever it has just been doing or what it is going to do next, its boredom is so great, that this poor unfortunate thing is almost in agony. It is still alive, but it is not capable of doing anything to gain Heaven....
For the last twenty years this soul has been filled with good intentions without doing anything at all to correct its habits.
It is like someone who is envious of anyone who is on top of the world but who would not deign to lift a foot to try to get there himself. It would not, however, wish to renounce eternal blessings for those of the world. Yet it does not wish either to leave the world or to go to Heaven, and if it can just manage to pass its time without crosses or difficulties, it would never ask to leave this world at all. If you hear someone with such a soul say that life is long and pretty miserable, that is only when everything is not going in accordance with his desires. If God, in order to force such a soul to detach itself from temporal things, sends it any cross or suffering, it is fretful and grieving and abandons itself to grumbles and complaints and often even to a kind of despair. It seems as if it does not want to see that God has sent it these trials for its good, to detach it from this world and to draw it towards Himself. What has it done to deserve these trials? In this state a person thinks in his own mind that there are many others more blameworthy than himself who have not to submit to such trials. In prosperous times the lukewarm soul does not go so far as to forget God, but neither does it forget itself. It knows very well how to boast about all the means it has employed to achieve its prosperity. It is quite convinced that many others would not have achieved the same success. It loves to repeat that and to hear it repeated, and every time it hears it, it is with fresh pleasure. The individual with the lukewarm soul assumes a gracious air when associating with those who flatter him. But towards those who have not paid him the respect which he believes he has deserved or who have not been grateful for his kindnesses, he maintains an air of frigid indifference and seems to indicate to them that they are ungrateful creatures who do not deserve to receive the good which he has done them....
If I wanted to paint you an exact picture, my brethren, of the state of a soul which lives in tepidity, I should tell you that it is like a tortoise or a snail. It moves only by dragging itself along the ground, and one can see it getting from place to place with great difficulty. The love of God, which it feels deep down in itself, is like a tiny spark of fire hidden under a heap of ashes.
The lukewarm soul comes to the point of being completely indifferent to its own loss. It has nothing left but a love without tenderness, without action, and without energy which sustains it with difficulty in all that is essential for salvation. But for all other means of Grace, it looks upon them as nothing or almost nothing. Alas, my brethren, this poor soul in its tepidity is like someone between two bouts of sleep. It would like to act, but its will has become so softened that it lacks either the force or the courage to accomplish its wishes.
It is true that a Christian who lives in tepidity still regularly -- in appearance at least -- fulfils his duties. He will indeed get down on his knees every morning to say his prayers. He will go to the Sacraments every year at Easter and even several times during the course of the twelve months. But in all of this there will be such a distaste, so much slackness and so much indifference, so little preparation, so little change in his way of life, that it is easy to see that he is only fulfilling his duties from habit and routine .... because this is a feast and he is in the habit of carrying them out at such a time. His Confessions and his Communions are not sacrilegious, if you like, but they are Confessions and Communions which bear no fruit -- which, far from making him more perfect and more pleasing to God, only make him more unworthy. As for his prayers, God alone knows what -- without, of course, any preparation -- he makes of these.
In the morning it is not God who occupies his thoughts, nor the salvation of his poor soul; he is quite taken up with thoughts of work. His mind is so wrapped up in the things of earth that the thought of God has no place in it. He is thinking about what he is going to be doing during the day, where he will be sending his children and his various employees, in what way he will expedite his own work. To say his prayers, he gets down on his knees, undoubtedly, but he does not know what he wants to ask God, nor what he needs, nor even before whom he is kneeling. His careless demeanour shows this very clearly. It is a poor man indeed who, however miserable he is, wants nothing at all and loves his poverty. It is surely a desperately sick person who scorns doctors and remedies and clings to his infirmities.