A life of fasting, properly understood as general self-limitation and abstinence, to the annual practice of which the Church always calls us with the Great Lent, is really that bearing of the cross and self-crucifixion which is required of us by our calling as Christians. And anyone who stubbornly resists this, wanting to live a carefree, happy, and free life, is concerned for sensual pleasures and avoids sorrow and suffering, that person is not a Christian. Bearing one's cross is the natural way of every true Christian, without which there is no Christianity.
The reason that fasting has an effect on the spirits of evil rests in its powerful effect on our own spirit. A body subdued by fasting brings the human spirit freedom, strength, sobriety, purity, and keen discernment.
There is nothing impossible unto those who believe; lively and unshaken faith can accomplish great miracles in the twinkling of an eye. Besides, even without our sincere and firm faith, miracles are accomplished, such as the miracles of the sacraments; for God's Mystery is always accomplished, even though we were incredulous or unbelieving at the time of its celebration. 'Shall their unbelief make the faith of God without effect?' (Rom. 3:3). Our wickedness shall not overpower the unspeakable goodness and mercy of God; our dullness shall not overpower God's wisdom, nor our infirmity God's omnipotence.
Suppose you have ordered yourself not to eat fish; you will find that the enemy continually makes you long to eat it. You are filled with an uncontrollable desire for the thing that is forbidden. In this way you can see how Adam's fall typifies what happens to all of us. Because he was told not to eat from a particular tree, he felt irresistibly attracted to the one thing that was forbidden him.
In this time of fasting and prayer, brethren, let us with all our hearts forgive anything real or imaginary we have against anyone. May we all devote ourselves to love, and let us consider one another as an incentive to love and good works, speaking in defense of one another, having good thoughts and dispositions within us before God and men. In this way our fasting will be laudable and blameless, and our requests to God while we fast will be readily received.
Beware of limiting the good of fasting to mere abstinence from meats. Real fasting is alienation from evil. ‘Loose the bands of wickedness.’ For give your neighbor the mischief he has done you. Forgive him his trespasses against you. Do not ‘fast for strife and debate.’ You do not devour flesh, but you devour your brother. You abstain from wine, but you indulge in outrages. You wait for evening before you take food, but you spend the day in the law courts. Woe to those who are ‘drunken, but not with wine.’ Anger is the intoxication of the soul, and makes it out of its wits like wine.
Once two brethren came to a certain elder whose custom it was not to eat every day. But when he saw the brethren he invited them with joy to dine with him, saying: Fasting has its reward, but he who eats out of charity fulfills two commandments, for he sets aside his own will and he refreshes his hungry brethren.
Fasting, while of value in itself, is not something to boast of in front of God, for it is simply a tool for training those who desire self-restraint. The ascetic should not feel proud because he fasts; no artist ever boasts that his accomplishment is simply due to his tools; but he waits for the work itself to give proof of his skill.
People have to answer greatly for not keeping the rules of the Church with respect to the fasts. People justify themselves by saying that they never considered it a sin to eat dairy products during the fasts. They repent and consider themselves sinners in every other respect, but they do not think to repent about not keeping the fasts. Meanwhile, they are transgressing the commandment of our holy Mother, the Church, and according to the teaching of the Apostle Paul, they are as the heathen and publicans because of their disobedience.
It is absolutely necessary that each Orthodox Christian have a knowledge of the content of his faith and its basic truths - the dogma of the Trinity, of Divine Love, the Incarnation, the saving death and Resurrection of the Savior, the future destiny of the world and of mankind, etc. These questions are not something distant and insignificant, rather they are vital and important to us, for the whole meaning of life hangs upon their answers. All these questions coalesce in one: is there a God and Who is He? These are questions of singular importance even for people who barely believe. For truly believing people, to know about God is to know what He means to us and what His will is concerning all of us. This is the basic, most important and precious knowledge in life. In fact, Orthodox life itself is defined first of all by the knowledge of God. The Lord Himself, while praying to His Father, said: 'This is eternal life, that they know You, the One True God and the One Whom You sent...' From all this, we see that the knowledge of God is our direct Christian duty, and the way to it, in addition to the study of theology, is the contemplation of God. Contemplation of God is the description of the spiritual mood in which man intentionally introduces into, maintains in his conscience, the thought of God, of His highest properties, the matter of our salvation and of our eternal future, etc. Such contemplation of God is especially loved by our Orthodox ascetics, but, unfortunately, it is not familiar to most of us. The knowledge of God is not, however, the mere rational acceptance and remembrance of our Orthodox Christian teaching of faith and life. Christianity is a living life, an experience of the human heart, and therefore it is accepted by people unequally. The more a person has experienced the truths and commandments of his faith in his personal life, in the inner experience of inner struggle and striving to live according to God’s Gospel, the deeper does he assimilate Christianity. Conversely, if a person treats his faith dryly, with external formalism, and is not guided by the appeals of Christ’s Gospel in his personal life, he will not accept Christianity into his soul and heart, and the profound content of the truths of Christ’s faith will remain alien to him.
In the same way a Christian in the strict sense is he only who confesses the true doctrine of Christ and lives in accordance with it. The designation of a Christian consists in glorifying the Heavenly Father by one's life. Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven (St. Matt. V:16). But true glorification of God is possible only if one rightly believes and expresses his right belief in words and deeds. Therefore true Christianity and it alone may be named 'right-glorifying' (Ortho-doxy). By the word 'Orthodoxy' we confess our firm conviction that it is precisely our Faith that is the true doctrine of Christ. When we call anyone or anything Orthodox, we by this very fact indicate his or its non-counterfeit and uncorrupted Christianity, rejecting at the same time that which falsely appropriates the name of Christ.
I shall speak first about control of the stomach, the opposite to gluttony, and about how to fast and what and how much to eat. I shall say nothing on my own account, but only what I have received from the Holy Fathers. They have not given us only a single rule for fasting or a single standard and measure for eating, because not everyone has the same strength; age, illness or delicacy of body create differences. But they have given us all a single goal: to avoid over-eating and the filling of our bellies... A clear rule for self-control handed down by the Fathers is this: stop eating while still hungry and do not continue until you are satisfied.
The right practice of abstinence is needful not only to the mortification of the flesh but also to the purification of the mind. For the mind then only keeps holy and spiritual fast when it rejects the food of error and the poison of falsehood.
Let those of us who have wisely finished the course of fasting and who celebrate with love the beginning of the suffering of the Passion of the Lord, let us all, my brothers, zealously imitate the purity of self-controlled Joseph; let us fear the sterility of the fig tree; let us dry up through almsgiving the sweetness of passion. In order that we may joyously anticipate the Resurrection, let us procure like myrrh pardon from on high, because the eye that never sleeps observes all things.
The Holy Fathers recommend 'moderate' fasting; one ought not to allow the body to be weakened too much, for then the soul, too, is harmed. Nor ought one to undertake fasting too suddenly; everything demands practice, and each one should look to his own nature and occupation. To choose among different kinds of food is to be condemned; all food is God-given, but it is advisable to avoid such kinds as add to the body's weight and appetite; strong spices, meat, spirituous drinks and such foods as are solely for the palate's enjoyment. For the rest, one may eat what is cheap and most easily available, they say. But by 'moderate' they mean one meal a day, and that one light enough not to fill the stomach to satiety.