Every sin that is left without repentance is a sin unto death, for which if even a saint shall pray, he shall not be heard.

Whoever prays for those who hurt him lays the demons low; but he who opposes his affronter is bound to the demons.

Do not attempt to benefit by rebukes one who boasts of his virtues, for he loves to display himself can not be a lover of truth.

Guard your mind from self-praise and flee a high opinion of yourself, so that God does not allow you to fall into the opposite passion to the virtue for which you boast, for man does not accomplish virtue alone, but with the help of God who sees all.

Do not desire to hear about the misfortunes of those who oppose you. For those who listen to such speech later reap the fruits of their evil intention.

If someone falls into any sin and is not sincerely grieved about it, it is easy for him to fall into the same thing again.

God values deeds according to their intentions. For it is said, "The Lord grant unto you according to your heart" (Ps. 19:5) ... Therefore, whoever wants to do something but can't is considered as having done it by God, who sees the intentions of our hearts. This applies to both good and evil deeds alike.