Consistently pray in all things, so that you might not do anything without the help of God ... Whoever does or busies himself with anything without prayer does not succeed in the end. Concerning this, the Lord said: "Without Me you can't do anything". (John 15:5)

When the mind forgets the purpose of Christian life, then even the clear fulfillment of virtue becomes profitless.

It is harmful to remember previous sins in detail. For if they bring you sorrow, they will estrange you from hope, but if they are remembered without sorrow, they will introduce the previous defilement. If you want to bring to God an uncondemned confession, then don't remember your sins in detail, but manfully endure the suffering that is coming because of them.

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

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.

God tested Abraham. That is, he sent him afflictions for his benefit, not so that he could find out what sort of man he was, for God knows everything, but so that He give him the means to perfect his faith.

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.