The Prayer is the source of all good deeds and virtues, and drives far away from man the dark passions. In a short time, it makes man worthy to obtain the grace of the Holy Spirit. Obtain it, and before you die, you will obtain an angelic soul. The Prayer is divine rejoicing.
There is no other spiritual weapon that can so efficiently hinder the demons. It burns them like fire burns the brush.
-St. Paisios Velichkovsky