To act 'according to one’s strength' means to use a little less than necessary both of food, and drink, and sleep... As for food, restrain yourself when you wish to eat a little more, and in this way you will always make use of it moderately.
Today, with the voice of the archpastors of the Church, I am being called to enter into the archpastoral service. I do not presume myself worthy of such a dignity, aware as I am of my sinfulness; but I fear to refuse it, hearing the words which the Lord directed towards Peter who had sinned so grievously, though he later repented: 'If thou lovest Me, feed My sheep, feed My lambs.' In explaining this Gospel passage, St. John Chrysostom calls attention to the fact that as a proof of love it was none other than the podvig of pastoral service that the Lord demanded. Why is pastoral service so great in the eyes of the Lord? Because, in the words of the Apostle Paul, pastors are 'laborers together with God' (I Cor. 3:9). Christ came to earth to restore in man God's image which had grown defiled, to call people, to unite them as one that faith one mouth and one heart they would glorify their Creator.
Let us have recourse to humility on all occasions; for the humble lie prone on the ground, and how can a man fall if he lies on the ground? But a man who stands on a height can easily fall.
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.
The incessant invocation of God's name is a medicine which mortifies not just the passions, but even their influence. Just as the physician puts medications or dressings on a wound that it might be healed, without the patient even knowing the manner of their operation, so also the name of God, when we invoke it, mortifies all passions, though we do not know how that happens.
Abba Or used to say this, 'Do not speak in your heart against your brother like this: 'I am a man of more sober and austere life than he is,' but put yourself in subjection to the grace of Christ, in the spirit of poverty and genuine charity, or you will be overcome by the spirit of vainglory and lose all you have gained. For it is written in the Scriptures: 'Let him who stands take heed lest he fall.' (I Corinthians 10:12) Let your salvation be founded in the Lord.'
My brother, the passions are afflictions; and so the Lord does not excommunicate us because of them, but He says: 'Call upon me in the time of affliction; and I will deliver thee, and thou shalt glorify me'. Therefore, when beset by any kind of passion, there is nothing more useful than to call upon the Name of God. All we can do, weak as we are, is to flee for refuge to the Name of Jesus. For the passions, being demons, retreat if this Name is invoked.
The Cross of the Lord was the instrument by which He saved the world after the fall into sin. Through the Cross, He descended with His soul into hell so as to raise up from it the souls who were awaiting Him. By the Cross, Christ opened the doors of paradise which had been closed after our first ancestors had been banished from it. The Cross was sanctified by the Body of Christ which was nailed to it when He gave Himself over to torments and death for the salvation of the world, and it itself was then filled with life-giving power. By the Cross on Golgotha, the prince of this world was cast out (John 12:31) and an end was put to his authority. The weapon by which he was crushed became the sign of Christ's victory.
Watch constantly, learning to understand God's law, for this warms the heart with heavenly fire. Guard your lips from the idle word, or empty talk, lest the heart gets used to evil words.
When you intend to do something and see that your thought is perturbed, and if after invoking God's Name it remains perturbed even by a hair's breadth, know from this that the action you mean to commit is from the evil one and refrain from commiting it. For nothing done with perturbation is pleasing to God.
You have no peace from thoughts, which impel you to trouble others, and in turn to be troubled by others. But know, my brother, that if we offend by word or deed, we are thereby ourselves offended a hundredfold. Be longsuffering in all things and refrain from letting your own will enter into anything. Carefully examine your thoughts lest they infect your heart with deadly poison (ill temper) and make you take a gnat for a camel, a pebble for a cliff, and lest you become like a man who has a beam in his own eye but beholds the mote in the eye of another.
When anyone is disturbed or saddened under the pretext of a good and soul-profiting matter, and is angered against his neighbor, it is evident that this is not according to God: for everything that is of God is peaceful and useful and leads a man to humility and to judging himself.
Acquire humility, which scorches the demons, obedience, which opens the door for the Son of God to enter a man, faith which saves a man, hope which makes him unashamed; and love which lets not a man fall away from God.
If you wish to be delivered from shameful passions, do not behave with anyone familiarly, especially with those toward whom your heart is inclined by a lustful passion; through this you will be delivered also from vainglory. For in vainglory is involved the pleasing of men, in the pleasing of men is involved familiarity of behavior, and familiarity of behavior is the mother of all passions.
Silence of lips is better and more wonderful than any edifying conversation. Strive to acquire humility and submissiveness. Never insist that anything should be according to your will, for this gives birth to anger. Do not judge or humiliate anyone, for this gives birth to anger. Do not judge or humiliate anyone, for this exhausts the heart and blinds the mind, and thereon leads to negligence and makes the heart unfeeling.
Uniting ourselves with Christ, we receive divine grace which gives human nature strength for victory over sin and death, and the Lord Jesus Christ has shown people the way to victory over sin by His teaching, and He grants them eternal life, making them partakers of His eternal kingdom by His Resurrection. In order to receive that divine grace from Him the closest possible contact with Him is necessary. Drawing all to Himself by His divine love, and uniting them unto Himself, the Lord has united to each other those who love Him and come unto Him, uniting them into one Church.