This All-Holy Trinity, we pious Orthodox Christians, glorify and worship. He is the true God, and all other so-called gods are demons. And it is not we alone that believe, glorify, and worship the Holy Trinity, but angels, archangels, and all the heavenly hosts, as numerous as the stars of the heavens and the grains of the sand of the sea unceasingly praise in hymns and worship and glorify this All-Holy Trinity. Again, out of love for the Holy Trinity men and women as numerous as the stars of the heavens and the grains of the sand of the sea spilt their blood, and as many renounced the world and went to the deserts and led a life of spiritual endeavor, and still as many lived in the world with self-mastery and chastity, fasting, prayer, almsgiving, and other practices; and all went to Paradise and rejoice forever.
What does Christ tell us to do?
To think of our sins, of death, of Hell, of Paradise, of our soul which is more precious than the whole world, to eat and drink as much as is sufficient for us, similarly to have clothes that suffice, while the rest of our time we should spend for our soul, to render it a bride of Christ. Then we should be called men, and angels on earth. If, however, we concern ourselves with eating and drinking and sinning…we should not be called men but beasts. Therefore make your body a servant of the soul; then you may be called men.
Source: the Teachings of S. Cosmas Aitolos