Thou, O Christ, art the Kingdom of Heaven; 

Thou, the land promised to the meet; 

Thou, the meadowland of Paradise; 

Thou, the hall of the celestial banquet; 

Thou, the ineffable bridal chamber; 

Thou, the table set for all; 

Thou, the bread of life; 

Thou, the unheard-of drink; 

Thou, both the urn for the water and the life giving water; 

Thou, moreover, the inextinguishable lamp for each one of the saints; 

Thou, the garment and the crown and the One Who bestoweth the crowns; 

Thou, the joy and rest; 

Thou, the delight and glory; 

Thou, the gladness and mirth; 

And Thy grace, the grace of the Spirit of all sanctity, will shine like the sun in all the saints; 

And Thou, the unapproachable Sun, wilt shine in their midst, and all will shine brightly, according to the measure of their faith, their asceticism, their hope and their love, their purification, and their illumination by Thy Spirit.

St. Symeon the New Theologian

In the words of the psalmist, "As you lie in bed, repent of what you say in your heart" (Ps. 4:4 LXX), that is, repent in the stillness of the night, remembering the lapses that occurred in the confusion of the day and disciplining yourself in hymns and spiritual songs (cf. Col. 3:16) – in other words, teaching yourself to persist in prayer and psalmody through attentive meditation on what you read. For the practice of the moral virtues is effectuated by meditating on what has happened during the day, so that during the stillness of the night we can become aware of the sins we have committed and can grieve over them.

St. Peter of Damascus

However, of this much we must be sure. Never by our sole diligence or zeal nor by our most tireless efforts can we reach perfection. Human zeal is not enough to win the sublime rewards of blessedness. The Lord must be there to help us and to guide our hearts toward what is good. Every moment we must join in the prayer of David: ‘Direct my footsteps along Thy paths so that my feet do not move astray’ (Ps. 16:5) and ‘He has settled my feet on a rock and guided my footsteps’ (Ps. 39:3) – all this so that the invisible guide of the human spirit may direct back towards love of virtue our free will, which in its ignorance of the good and its obsession with passion is carried headlong into sin.

St. John Cassian