A person who suffers bitterly when slighted or insulted should recognize from this that he still harbors the ancient serpent in his breast. If he quietly endures the insult or responds with great humility, he weakens the serpent and lessens its hold. But if he replies acrimoniously or brazenly, he gives it strength to pour its venom into his heart and to feed mercilessly on his guts. In this way the serpent becomes increasingly powerful; it destroys his soul's strength and his attempts to set himself right, compelling him to live for sin and to be completely dead to righteousness.
Symeon the New TheologianMore Symeon the New Theologian quotes
'Strive for peace with all men, and for the holiness without which no one will see the Lord' (Heb. 12:14), Why did he say 'strive'? Because it is not possible for us to become holy and to be saints in an hour! We must therefore progress from modest beginnings toward holiness and purity. Even were we to spend a thousand years in this life we should never perfectly attain it. Rather we must always struggle for it every day, as if mere beginners.
Symeon the New Theologian
... if we are ashamed to imitate our Lord's sufferings, which He endured for us, and to suffer as He suffered, it is obvious that we shall not become partakers with Him in His glory. If that is true of us we shall be believers in word only, not in deed. When deeds are absent, our faith is dead.
Symeon the New Theologian
Through repentance the filth of our foul actions is washed away. After this, we participate in the Holy Spirit, not automatically, but according to the faith, humility and inner disposition of the repentance in which our soul is engaged. For this reason it is good to repent each day as the act of repentance is unending.
Symeon the New Theologian
Unbelievers, those who believe with difficulty, or believe in part, are those who do not show their faith through works. Apart from works the demons also believe (cf. Jms. 2:19) and confess Christ to be God and Master. 'We know Who You are' (Mk. 1:24), they say, 'You are the Son of God' (Mt. 8:29), and elsewhere, 'These men are the servants of the Most High God' (Acts 16:17). Yet such faith will not benefit the demons, nor even humans. This faith is of no use, for it is dead.
Symeon the New Theologian