Symeon_the_New_TheologianInasmuch as the cross has become as it were the altar of this fearful sacrifice – for on the cross the Son of God died for the fall of man – therefore the cross is justly revered and worshipped and depicted as the sign of the common resurrection of all men, so that those who bow down before the wood of the cross might be delivered from the curse of Adam and receive the blessing and grace of God for the doing of every virtue. For Christians the cross is magnification, glory, and power: for all our power is in the power of Christ who was crucified; all our sinfulness is mortified by the death of Christ on the cross; and all our exaltation and all our glory are in the humility of God, who humbled Himself to such an extent that He was pleased to die even between evildoers and thieves. For this very reason Christians who believe in Christ sign themselves with the sign of the cross not simply, not just as it happens, not carelessly, but with all needfulness, with fear and with trembling, and with extreme reverence. For the image of the cross shows the reconciliation and friendship into which man has entered with God.
Therefore the demons also fear the image of the cross, and they do not endure to see the sign of the cross depicted even in the air, but they flee from this immediately knowing that the cross is the sign of the friendship of men with God …

Those who have understood this mystery and in very fact have known in experience the authority and power which the cross has over demons, have likewise understood that the cross gives the soul strength, power, meaning, and divine wisdom …To the degree of the reverence which one has toward the cross, he receives corresponding power and help from God. To Him may there be glory and dominion forever. Amen.