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.
Do we forgive our neighbors their trespasses? God also forgives us in His mercy. Do we refuse to forgive? God, too, will refuse to forgive us. As we treat our neighbors, so also does God treat us. The forgiveness, then, of your sins or unforgiveness, and hence also your salvation or destruction, depend on you yourself, man. For without forgiveness of sins there is no salvation. You can see for yourself how terrible it is.
Listen to the word of God handed down to you through the priest, & do as it teaches you; look upon the priest as the messenger of God; love him as your Father; care for him as he cares for you; do not believe calumnies about him & do not spread gossip; be not scandalized at his shortcomings, and pronounce no judgment; pray for him, for his duty is heavy & the forces of evil are raised against him; if he teaches without carrying out his teaching himself, remember the words of St. Matthew 23: 2,3.
Many teach their children about worldly politics, others teach them to speak foreign languages: French, German, Italian, and in this spend no trifling sums. Others endeavor to teach them commerce and other arts. But hardly anyone teaches them to live in a Christian manner. However, without this, all learning is nothing and all wisdom is madness. For what does it profit a Christian to speak Italian, French and German, if he lives in an ungodly manner? What use is it to be skilled in commerce and the arts if one lacks the fear of God? God will not ask you whether you taught your children French, German or Italian or the politics of social life--but you will not escape divine reprobation for not having instilled goodness into them. I speak plainly but I tell the truth: if your children are bad, your grandchildren will be worse, and the evil will thus increase...and the root of all this is our thoroughly bad education.
Leave off all evasions, bend your neck to humility and obedience, and you will receive mercy. If you practice with humility and obedience what you hear from the fathers, God will grant you His blessed help not only in the work you are doing, but will make all your works successful, for He protects the path of those who fear Him and watches their progress.
The virtue opposed to pride is humility. But as far as pride is loathsome and abominable, so welcome and lovely is humility to God and men. God Who is great and exalted looks on nothing so lovely as on an humble and compunctionate heart. Whence even the Most Holy Theotokos says of herself, For He hath regarded the low estate of His handmaiden. (Luke 1:48).
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.
Concerning fasting, do not grieve, as I have said to you before: God does not demand of anyone labors beyond his strength. And indeed, what is fasting if not a punishment of the body in order to humble a healthy body and make it infirm for passions, according to the word of the Apostle: 'When I am weak, then am I strong' (II Corinthians 12:10).
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.